Well, if you can get enough people to subscribe to you and make a decent profit from it, why not. If you are good at something, try not to do it for free.
However, I would only ever even consider paying my Eurobucks for development in a game if I pay for something specific to get done and have a guarantee it gets in the game and have a means of litigating this according to German and European statutes about providing digital services and I would only pay once the work has been finished to avoid situations like Geoff and Sombra have been in. Needless to say that'll never happen.