the main thing is that there is a much lower playerbase than men, so there will be less who grind to diamond, then even less who want to go even further, then even less who want to/are able to grind through the depths of immortal and come out with good enough mechanics to be able to play on a truely top level team, then from there finding similar skilled teammates, managing to grind through everything and ending up breaking out
this is without taking into account the horrendous sexism that happens in matches all the time, and yes even in immortal, which discourages a lot of women from continuing as well (luckily i dont have that since im trans but that brings so many other problems to my life so like lol nvm :D)
also obviously most of us will prefer to stick with other women (due to dogshit they experience in ranked etc) so then like since its so hard to find high level male teammates already of course it's going to be even harder to find women on that level
i think it's very possible that we can see some female players mixed into the very top scene soon enough, but multiple full teams is just super fckn unlikely (hope this makes sense idk im kinda just spamming shit)