What? A miner that accepts transactions with no fees is not actively blocking transactions with fees. This point makes no sense.
Blocking transactions? I don't think anyone was talking about that.
If "enough" miners don't require a fee, then some transactors will not send transactions with a fee, and many others will simply send insignificant fees (like now). Some miners that were mining for a profit will no longer be able to make a profit, and they will stop mining.
Despite what someone else claimed, this does not make confirmations take longer, increasing the price of transactions, and incentivizing more miners to mine, because of the fixed time to mine a block.
Either this will reduce the security of the bitcoin network, or stakeholders will mine "at a loss" to avoid losing their bitcoins.
And, it's silly to make stakeholders do PoW.
Add:
Your hypothesis about people not wanting to be with them
LOL, I didn't make that hypothesis. I don't know what you're talking about :-)