Men are expected to take the risk of approaching women. When they do that they have to know what the woman's boundaries are, because if they don't then they're labeled a creep or a sexual harasser (even though it could be a one time event). The consequences of this kind of failure can result in being ostracized or even a loss of your livelihood. Just a misunderstanding is enough in some cases and there are plenty of cases of false accusations too. Some men aren't going to take these kinds of risks, because instead they can just go home, watch porn, and play video games. We have evidence of this too - young men are having far less sex than young women.[0]
I think this might be a big problem going forward, because these young men are going to be less invested in society than previous generations. This could have all kinds of implications on the economy, but also the future path of society. We've read articles [1] about how surplus young men can cause society to become less stable. One of the important pieces is that the men that don't get married are less invested in society. Those articles were in reference to Asia, but I don't see how that couldn't also apply to the young men in the western world if they don't have any relationships.
The worst part is that I don't think this is something that can be changed.
[0] https://www.washingtonpost.com/business/2019/03/29/share-ame...
[1] https://qz.com/186066/this-lost-generation-of-young-men-is-t...
