I mean, the upside is that these datacenters (mostly) aren't exporting and hiding their costs. (Electricity generation's externalities are not the worst, but are often relevant) Companies trying to do the power-hungry AI training or running expensive models have to pay for that electricity themselves (and this provides direct incentive to try and find more efficient ways of training/etc). They might pass that cost on to the consumer, but that's in fairly obvious ways. Contrast all the cryptocurrency nonsense, where transaction fees and problems are generally less obvious, and the entire premise requires high power cost.
On top of that the main conclusion from "lots of new + more power-hungry datacenters = 2-6% increase in power usages" is not "this is an environmental crisis". It's "by Amdahl's law this isn't a particularly important place to optimize". It's new, so there might be low-hanging fruit compared to the things that actually cost energy, but when the absolute maximum improvement is single digit percentages, it's not the sort of thing you blame for any energy crisis.
You do not have copyright over the idea of your app and never have. That's not what copyright is for. You have copyright over the code of the implementation, and maybe could, depending on the random-ass decisions of your country's patent office, have a *patent* on the idea of it. Even the shittier patent offices hopefully would not give a patent for "make my phone into a flashlight", and the devs probably didn't try.
When a company acquires another like that it's to get the existing implementation and/or "hire" the people who came up with the idea. Chinese companies are probably being accused of stealing code/hardware designs/etc provided under NDA (or random nonsensical complaints too).
Serving coffee on aircraft causes turbulence.