fathers would chose the husband for their daughters, but alot of girls would still sneak out and fuck chad, the biology is too strong, you cannot resist the desire.
so we are fucked either way,
the only way incels could be living normal sex lives is that like 95 % of men die out from a virus, lets say corona only hits males and has a death rate of 95% then maybe incels have a chance because there are so few males.
but even then, girls might just share the top 10% of the remaining 5% of males. idk hard to say,
or actually not having access to entertainment like in small village life thousands of years ago, the girls didnt know the gigachads existed so they settled for incels and other below average males.
but we cannot possibly put the genie back in the bottle.