Sure, but why should regular people pay for the upgrades needed to power data centers? The tech companies can surely afford that easily given their record profits for the past decade?
Forcing all costs on to new entrants in a market is generally a bad thing for the market and causes it to not expand fast enough. Also they may just choose to not participate in the market at all. I.e they'll bring in a whole lot of natural gas generators, put them in the parking lot and call it good, which is not a good thing long term.
Because they like shopping on Amazon and watching Netflix?
supply and demand. there is more demand, prices go up, the market allocates, it's the best way, no other way comes close to making the overall price level to be as cheap as possible.