This is the vibe I regularly get from Indie Hackers. So many start-ups exist to serve the start-up/SaaS industry. Every second day there's a "SaaS that helps you create a SaaS that sends Emails for SaaSes" start-up posted there.
Startup founders often cater to other startup founders, and it seems oddly circular, until you look at more mature businesses and realize the same thing is happening: businesses selling things to help other businesses sell things to other businesses…