Women generally don't act unless there is immense, guaranteed, deeply satisfying reward.
Cheating is good because it's active betrayal, it tears apart another woman's family, her own family, or even both. There is a chance of having an orgasm too, minor side bonus but still worth mentioning.
Women don't invest because it sucks. Play it extremely safe and maximally conservative and you only double your money ever 10+/-2 years. Shitcoins require intelligence and planning, you can't be controlled by emotions.. Meme stocks are associated with weird guys so even if it's a sure thing you don't want to be associated with it.
Ghosting costs nothing. You leave a relationship in limbo, effectively putting someone on the backburner. Even if non pursuing them you can popup out of nowhere and he'll order you a pizza or buy you something on steam, then go right back to no contact for another month. There's no cost and no benefit to ghosting. To clearly terminate something there's no benefit. It's nothing personal, just hitting pause because the potential value is seen as at least 0, and potentially some free takeout delivery now and then when Chad is too busy fucking some other girl.