Why? its a service provided using software, it's not really any different.
Because of all those horrendous sites that force you to use the browser...
I pine for the days when download links were direct links to files which you could cut+paste to wget.
Until recently i had to make do with 0.5mbps dsl, and there are people who are still forced to use much slower links than this...
This is one of the reasons i immensely dislike streaming services, i would much rather schedule a download to occur at night when i'm sleeping, streaming over 0.5mbit would be very poor quality but i can download a 720p movie or tv episode while i sleep.
Personally i'd rather my media player spent all its time actually decoding the media, rather than wasting resources trying to enforce some arbitrary drm schemes.
It's a service, no different to any other service you buy...
By using an ISP you are support SaaS, the ISP runs all manner of routing software in order to support the service you're using.
It is effective at what it was designed to do - restrict paying customers so they are often forced to buy multiple copies of the same thing.
It is not intended to stop organised piracy, these people will never be customers as they would rather do without the media than pay for it.
Instead they have identified people who are willing to pay, and use drm to force them to pay more.
Same applies to PC and Amiga, much easier to copy games than cartridge based consoles which was a key factor which drove sales of these platforms for gaming.
Having nothing running by default is just basic, if you want to open a service to the world then you should have to explicitly turn it on.
Still running default services and just hiding them behind a firewall is a stupid, not having them running at all is far more sensible.
Supercomputers are generally built of a large number of general purpose CPUs, which aren't all that good at bitcoin mining compared to dedicated ASICs... Even with hundreds or thousands of CPUs, you will consume more in power than you ever make in bitcoin.
Which means you need to enter your key every time you start the browser...
If the browser has a way of automatically knowing the decryption key, then so does a hacker.
Also, previous session data should be useless - the sessions should have expired, or been closed when you logged out. Most sites that offer the option to stay logged in warn you against doing so on a system you don't trust.
And i'm pretty sure other browsers don't store persistent cookies very securely either, they used to be in a plain text file and they can certainly be viewed/user from within most browsers without having to ever supply a decryption key.
A reply paid envelope is not enough under UK law, as that unnecessarily inconveniences the recipient if they have to take the item to a post office.
The company should be offering to collect the goods from the same location to which they were originally shipped (most couriers will do this), and should also be compensating the recipient for the fact they haven't received the goods they actually ordered and had to deal with the inconvenience of receiving something else instead.
Under UK law you must inform the sender that you received an unsolicited item from them, and you must make it available for collection... You certainly never have to pay for the shipping yourself or suffer the inconvenience of having to take the package somewhere. You simply make it available to be collected from the same location it was shipped to, at a time which is convenient to you and everything else is down to the original sender.
Under UK law if you receive something unexpected you are obligated to inform the sender, and then make the items available for collection if they want them back. Having done this, if they fail or refuse to collect the goods you are free to keep them.
In this case however the delivery was not unexpected, these users were expecting a delivery from zavvi and didn't receive what they ordered... Normally when this happens (ie every time it's happened to me) you get something massively inferior to what you ordered so you'd have no reason to keep it.
The seller is in breach of their contract by sending you something different to what you ordered, and should at the very least be compensating you for messing up your order.