This:
https://slipstream.mara.com/

I personally don't have an opinion on it one way or the other from a utilitarian standpoint. This might turn out to be an unexpected good thing and be relatively insignificant to each of us as individual people using Bitcoin as money. Especially because people using this still have to pay competitive rates (currently 5 times as much) per byte of data for the mining company to make a larger profit off of doing it than for them to mine pleb transactions.