The opposing and (IMHO) ultimately greater pressure is that it's also in miners' best interest to keep Bitcoin alive and successful. It took a long time to hammer out SegWit2x and it's still not certain that it's going to work.
Segwit2X would activate effectively Bip148, though it was originally a proposal to use a different mechanism it is acceptable enough that Core is happy to have segwit activated that way.
