I wonder how BAN feels keeping 37.5% of the pools earnings and not paying it out to the miners? I guess that makes BAN happy

Almost 48hrs since BAN found a block so I would say that 37.5% is getting burned up fast. But then again with me getting paid PPS I really don't care how much he makes, but am glad he does to help pay the bills.
I gather you didn't notice the smileys on each of the last 2 lines?

Yes I was grinning as I wrote them ...
Yes, what you said is actually the exact point of the comments we've made about long term, but specifically, the statistical expectation is a loss.
All PPS pools indeed have to deal with the statistical expectation that they will eventually run out of BTC generated by mining, that's why they pretty much all charge higher % fees on PPS.
... and that -10% means the expectation is sooner.
PPS also means that a block withhold is a successful direct attack on the pool, not the miners or the withholder.
So again any PPS pool would want to be working out how to cover that if it happened.