This papers over the whole "relying on large cloud providers" issues in the first place. A decentralized system will ensure that websites won't need to rely on large, centralized powers beyond core infrastructure providers (which we have to fight to ensure are neutral parties, ala Net Neutrality) to avoid concentration of power to a select few.

While I agree with your assessment, it reminds me of the "flying horse carriage" view of the future. Wouldn't be surprised, if multiplanetary hosting would change things more generally.

You will have to attend community tournaments and compete locally for the chance to play against a Mars team over a high-bandwidth satellite array, possibly on a lunar base, possibly only during seasons of opposition between Earth and Mars.

Even then, you will be playing on a specially-modified version of the game that disables server-side anticheat systems, instead relying on human referees.