Intel are a process node ahead of the competition
This needs to be qualified. It is true for the high-performance chips, but for mobile and tablets we're talking about SoCs. As far as I know Intel is still not shipping any SoC chip in 14nm and such things are quite a way out in 2015. Intel mobile chips are still in 22nm today, whereas TSMC is in volume with 20nm (Apple latest APs, QCOM latest LTE modems). Intel may leapfrog TSMC in 2015, but the gap for low-cost mobile SoC is not as big as people often think. Intel is the king of high performance, for low-cost good-enough mobile SoC : not so much.
you have no control over that hotspot
Wrong, with Free you can decide to turn the hotspot off completely, turn in on but keep in private (for your own personal use only), or turn it on and also share it.
If the hotspot is off or private, you can't use other Free APs for your own use. If you share, you have free access to any Free hotspot. Up to you to decide.
the company uses your payed line to make more money
As explained above, it goes both way. I have an extra service too for free, which is why my WiFi is shared. And other users are always handled at a lower priority, so it's really transparent to me: they just get the unused capacity on my line.
The wifi access is not directly monetized, in that no-one pay for it. But it certainly make Free more attractive as an operator: their boxes are very popular, so you can get wifi coverage mostly everywhere in a city as long as you participate in the sharing.
you have no control to your router whatsoever
You have control over some basic configuration like the DHCP configuration, basic port forwarding and IPv6 enabling for example. But it's true that the router belongs to Free and you don't have direct access like you could have on an OpenWRT box. If you want this you can put your own router behind, it's a bit wastefull but I did it at one point to have more control over DNS for example.
you have to login to the company's website and see what limited options they provide you
Yes, all the configuration is done through Free web interface and pushed to the box from their network.
in France I had terrible problems with latencies and ofc with Youtube
There was quite a big fight between Free and Google a few months back. Same kind of conflict as between ISPs and big network users like Google, Netflix all over with ISPs trying to get money from them. It seems it's been resolved recently for Youtube, it was really awful at the worst of the clash but is now ok (I'm not a big user though). Still, I'm waiting to see how it'll go with Netflix now they're present in France and if that kind of problem will happen again. I'm not super optimistic, but I've heard there are discussions happening. As I understand it the ISPs would prefer to be able to offer Netflix on their boxes with a cut of the profit in exchange of good network quality, and the big discussion is on the percent of profit for this... We'll see.
Having more MIMO SM layers (i.e. concurrent channels) is not practical. The complexity of a MMSE decoder isO(L^3) with L the number of layers, so it gets ugly quickly. Today MIMO SM is typically limited to 2 layers in practice, with 4 likely coming and 8 the practical limit (and that may not be so practical really...).
Using very high frequencies (above 10 GHz) gives access to a lot of free spectrum, but the higher one go the lower the reach for a given power budget. To compensate for the high attenuation this is coupled with massive multi-antennas, the talk for 5G is 64 to 256. This is split between a few very costly MIMO SM layers and the rest for cheap beam-forming. So for example 256 antennas would behave like four 64 patches BF antennas for 4 layers MIMO. Of course with that many antennas and RF transceiver you have to compromise in cost and quality. So it's a lot of poor receive chains, vs. a few very high quality ones today. But there's still the potential to gain overall.
It has challenges though: it will still be for small cells (low reach) and rather low mobility (the beam steering cannot track high speed mobiles, plus small cells don't work wall for highly mobile devices: too many handovers). But because most people are low speed and the places where capacity is most needed are urban centers where small cells are ok, it still can be a win.
But as one can see, high speed 5G won't be universal like 4G is. By this I mean that 4G can (and will) completely replace 2G and 3G in time, while this high frequencies / massive BF 5G could only complement 4G is high density urban places, but will never be suitable for lower density parts (rural) where 4G would stay.
And then there's the elephant in the room: a lot of the improvements in telecoms have been riding on Moore's law. With the scaling problems that start now to be more openly discussed, how much more processing power we can use for 5G and what the users are prepared to pay (cost and power) for all these improvements are interesting questions.
With your bare hands?!?