Ok, let's explore this a little more.
What would a person do in this scenario...
During two way give and take foreplay, the woman doesn't orgasm after say 20-30 mins of touching/oral or whatever, nor gives any specific direction of what she wants, even when asked if there is anything specific they would like - "what you're doing is lovely".
(Yeah, but not that lovely, clearly)
Eventually the man kind of resigns to the fact that he is not going to be able to bring his partner to orgasm manually, therefore moves on to PIV.
Tries several different positions, but is always the one to suggest a position change - the woman seemingly content with whatever position is suggested.
When possible, depending on the various positions the man tries to assist with manual stimulation, but to no avail.
PIV continues for anywhere between 10-20 mins, but with no real orgasmic response form the woman, nor encouraging feedback, the man kind of looses heart due to the woman's apparent passiveness.
Despite best efforts, excitement levels never appear to raise above a 3 out of 10 and the prospect of hearing something like "Just like that, or don't stop etc" are a million miles away.
During PIV, there is no apparent attempt on her part to shift position, take control, manipulate angles or rhythm to increase her own pleasure, nor would she reach down and stimulate herself.
So eventually, after a fair while with no increased response, feedback or seemingly any attempt at creating/extending her own pleasure, the man kind of gives up and finishes the job, as to go on any longer would be fruitless.
The man wants to please the woman and wants to give her an orgasm, but without any feedback, request or response, wonders whether to feel guilty or not for the woman not reaching orgasm, then questions how much responsibility should the woman take for helping herself get there after reading so many threads where the woman complains about selfish lovers.