That's a very good strategy. If I wanted to make my own company, and keep it around for a long time, I would probably do something very similar. Start small and grow sustainably.
You're absolutely right about the cow clicker games. I think their business model has been validated to be used, but the overall game design needs to be refreshed.
Still, with that kind of games, there's extreme oversupply of all sorts of designs. Here's this issue: one needs very carefully controlled trials to select the best of the alternatives. Market does not do this. There isn't a magical mechanism that turns the best of competitors most profitable. Competition among too many products is a lottery. When you make something that everyone else can make - do research before you just conclude nobody's doing this, you'll see a lot of people are actually trying to do it. Minecraft made a lot of money, right. Was it ori...