"We don't like being a customer of the company that clubs baby seals but our customers would leave us if we didn't use the company that clubs baby seals so I guess we should pay up for some more clubs."
It's a pretty glaring example that "free markets" usually aren't, and often unrelated to government intervention. You have information, you have agency, and you have the thing that the other party wants (money), yet you don't feel free to move away from a supplier who you clearly view as unsuitable[0] because that supplier has gained a market position so dominant through exploiting others.
0 - If I am reading too much into your comment, I apologize and don't mean to put words into your mouth.
Well, you can buy it from one of those 'green energy' companies... I dislike the marketing a lot (as though it isn't fungible and you are somehow getting different, greener electricity piped to you than your neighbour) but it does work in the sense that you can shift the needle by buying your (essentially just as not-green as if you paid (less to) anyone else) electricity from someone who has whatever commitment to fund green projects or buy the 'green wholesale' stuff or however it works.
(Not that I do that.)
The budget for one company I worked at's infra -- 4 full racks in two datacenters with power, network, and a dedicated site-to-site between them was $200k over five years plus $3k/mo ongoing costs. The upfront cost was tiny tiny -- they started with a router, two switches and 4 used supermicro blades. That lasted them the first 4 years of their startup. It took two FTEs to manage the full infra and provide a PaaS style thing to the developers.