A lot of these girls, especially some of the most beautiful Eastern European/Russian girls want to be more legitimate models. They start camming to make money, not just to get by, but to pay for all the beauty procedures/clothes/products they need to get pretty enough to start to try to be a real or a more serious model. When they finally start getting enough money or enough interest from professionals, they drop a lot of the sex work and clean up their content so they can be more mainstream. Of course, this also goes for when they finally start attracting rich enough men as boyfriends/husbands as well.