Are there ANY metatrader brokers out there that don't try to get you to close your account if you constantly make money?

Anybody found one? Please list them below......if they exist.

The fact that they do this seems to indicate that they have a flawed business model? Does it mean that if all their clients made money on a regular basis, they would go broke from paying them? Forgive my ignorance as a noob but if this is the case, where does the money come from to pay clients? Company funds? The banks? Other members funds? Help me understand..............

I just am reading so many stories about people getting the hang of trading and then being told to bugger off by the broker ???