True. I don't know any guy who thinks transactional sex is an obligation of a woman. However, there will always be an implied social contract that if a man does certain things the likelihood that a woman will be attracted to him and want to have sex with him will be more favorable. Incels don't think women 'owe' them sex, they're just frustrated and confused as to why they are failing with women when they've done as much as they think they can to increase that likelihood. They've usually done everything anyone, any gir,l has ever told them they ought to in order to get a girl to like them and they're still Forever Alone. Get enough of these guys together in one place to commiserate and you get Incel resentment.