Yes 100% this, there are lots of people with the same ambitions as the OP, but they aren't getting 600k checks for an idea. They're building companies on side, savings, or with a little help from family or friends.
I just meant there are people trying to achieve his goal (of building a small SaaS), but they are unable to do it in the same way that he wants to achieve his goal (raising 600k on an idea).