The interesting thing is that the only pool that originally support BIP101 (slush pool) dropped their support code in the block and now no one is supporting BIP 101 anymore. BTCchina pool, once support BIP 100, also dropped their code and back to core
This is exactly how a consensus building process looks like: Each participants continuously evaluating the current poll of the opinion and adjust their view in the process. When you see that your decision is against majority of the participants' consensus, it is always favorable to re-check your calculation and try to reach consensus if possible
But there is still 50/50 split between change and no change, I guess mostly because there is really no convincing evidence that current block size is not big enough
Interestingly the big payment processors made a firm stance for BIP101, even gave a deadline date, and are still on that position.
They have a lot of weight as they are the one giving the coins themselves the most value. We'll see how it goes.
That's absolutely false. Bitcoin holders are the one giving Bitcoin value. Payment processor are selling Bitcoin for fiat everyday, if anything they are depreciating Bitcoin's value.