If you run a gaming convention, or run a game store which hosts games, then you can ban those players.
Otherwise, it's not your decision to make (or in the UK, your decision to take).
I attended a convention recently. I imagine that much (most?) of its income came from registration fees, and I imagine that most of the players who paid registration fees expected games which cleared the low, low bar of avoiding "you wake up handcuffed together in the back of a van" (let alone naked and sore). If that sort of scene were common, in games at the convention, then I suspect repeat business would decline. I, for one, would not pay to come back for more of that.
I have visited games at my Friendly Local Game Store. One of them featured a PC who was, in the words of the player, "rapey". Whether I go back to that store is my decision. I'm not going back to that particular DM, and thus not to the store's Monday evening table. The store gets weekly fees from the players who sit at that table; on the other hand, it would also get a weekly fee from me, if the GM set stricter boundaries on that particular player - so whether it's making good money on that table, or whether it's missing opportunities to make MORE money, is theirs to evaluate. I imagine most women would also find that table too uncomfortable for repeat business, and in Northern California, losing the business of female gamers means losing a substantial percentage of one's customer base. We each make our choices.
If you're about to dismiss me as thin-skinned: I've played in home games which entered thematically touchy territory. In one of those games, a Bad Guy captured the PCs. Between sessions, the GM asked us to each write a description of the most traumatic event our PCs had ever experienced. In the next session, our PCs were strapped to tables and forced to re-experience those traumas, sort of like the torture scene in "Princess Bride" but more personalized. One of the PCs re-experienced seeing his brother die (from his background story). I considered asking the GM to stop the scene, as it was hard for me, in the wake of my brother's death the previous year. I decided to roll with it; when I told the DM, afterwards, he apologized, and he told me that he had a plot planned in which the PC's brother shows up as a revenant. He offered to drop that plot line. I thought about it, and replied that I could handle it, because knowing it was coming, and I could prepare myself mentally. As it turns out, we defeated the revenant; then my paladin PC spoke at the funeral and consecrated the burial ground. In the end, that was a positive way for me to bring my real world grief into my PC's expression of personality. But it was very much a good thing, that the GM was *willing* to ditch the revenant storyline, out of respect for one player's experience.