Couldn’t they “convince” instance admins to include ads? Couldn’t they flood communities with influencers? Couldn’t they promote Lemmy apps that have ads?
You are severely underestimating the criminal energy and creativity of these corporations.
Edit: reddit turned to shit way before the platform itself was up for sale. No need to buy the platform, bots and influencers are enough.
I mean, comparing that to coal isn’t a very impressive feat. Nuclear power is very expensive, fission material is limited and sourced from dodgy countries, storage is difficult etc. The emissions are the only good thing about it. There are good alternatives to that. I guess using the existing ones until they need to be decommissioned is still a good idea though.