the only thing that needs to happen for people to pay more with bitcoin is for people to hold more bitcoin
nobody's gonna integrate any new payment method unless it makes a business sense, and it will make more sense the more people HOLD bitcoin and can consider it for payments, out of ease
filters relay policy came after a long time since bitcoin had a real first principles / higher orders thinking test (since the fork wars?) and unfortunately many high profile individuals fail spectacularly this time again
oh well…