I do not have the excess capital to throw at working on problems at the scale that I want to or in the segments that I'm interested in. Any money that I spent to work on these companies would be gambling with the future financial stability I can provide for my son. Providing him with the safety net necessary to pursue atypical career paths or interests is one of my top priorities.
VC funding is the only way that starting a company is possible for me. The existence of VC funding is the only reason I'm even ideating about these large problems. It's an equalizer that puts those of us without the same set of options at a level playing field.
Consumer apps can often get away with scaling ARR and slow incremental growth, but many of these are only feasible due to the existence of VC backed SaaS.