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I had a similar concern a few months back when I asked if fees will be enough to keep miners on the network when the main incentive (block rewards) are taken off the equation. It will be interesting to see how things play out when we get to that.
Covered that also:
Angry at the high fees? That's what everyone predicted the future will be like!Last block with min 44sat fee had 0.558 BTC fee, the default reward is 6.25 so...500sat/b to be one the same level.
Probably they'd have to increase fees in order to compensate for the lack of block rewards.
They can't increase the fee on their own, users will choose, they will either pay or not, the free market will decide what the fees are 100 years from now just as it decides now, last year there were 1 sat/b because there was no demand for space now it's 50sat/b because there is, tomorrow it might drop further or go back up, the users decide that.
Miners enforcing minimum transactions in their mined blocks will end up with nothing as this will just kill transactions on the chain completely.
Until the miners start hard forking the chain to censor transactions, their refusal to include certain transactions only delays them for time on average proportional to their share of network hashpower. And when or if there will be such attempt, I'm sure the whole community will choose the censorship-free chain....
One tiny detail, the hashrate is still there, users can choose this chain, but if those guys have more than enough hashrate (they do right now) they could simply make this chain inoperable, without "attacking" it, forking it or anything that would send them to court, all it takes it's for them to mine on this chain and at the difficulty adjustment reset to stop, if they have 66% of the hashpower for the next half and a half months you're going to see one back every 30 minutes. Imagine that happening now...