While I agree with the spirit of this comment, I would suggest that it does not really work like that. There are some aspects of running a business (eg support

While I agree with the spirit of this comment, I would suggest that it does not really work like that. There are some aspects of running a business (eg support, maintenance, etc) that do not scale linearly like you propose. Running 3 $500/month businesses is much harder than running a single $1,500/month business. In all likelihood, your $500/month business will open a door to a $1,000/month business which will lead you to a $2,000/month business. You have to think of each part as a step on a path. You will never get to the last step if you never take the first small steps. To be clear, I am totally in agreement that the important thing is to start wherever you can.