Yes, sex workers already have an option of other work. No other work gives this pay or these benefits - name one. Name one job. And I'll tell you why sex workers won't choose it over their current profession. As it is, nothing really competes.

The societal issue is that we have a class of people who own the labor of other people. Until workers own their own means of production, all work will be exploiting workers.

The reason I won't get married as a sex worker is because marriage is sex slavery in my eyes. The man not only owns the wife, he also owns their children. Your mom worked for no pay, in a work contract that lasts a lifetime, and had the children of her captor. That this has been common doesn't make it right or idyllic. It's quite horrifying to me along with all the tradwife/slave stuff.

That slavery and ownership aspect is what is different between free and clear sex work and sexual slavery of wives. It's not family - sex workers have families and relationships with their clients as we've already established. It's that the husband doesn't own the family and is disempowered. In the patriarchy, this is bad and so "whores" are bad. Wives are good because they allow for much more power and control over them. This is also why women commonly experience a huge upswing in abuse after commitments, eg after she moves in with a man, after she gets married, after she has a baby, etc.