Step two would be charge for updates. So for example if you were in 1.3.0 and you wanted, aka the version everyone is on 1.3.1, you will be able to buy it once the early access people get to 1.3.2, which will in turn still let the developers make money. However, once the early access folks reach 1.3.3, you will be able to access 1.3.1 freely. Same concept. (kinda)