Ask HN: B2B SaaS founders: what are (or have been) your biggest bottlenecks?

I'm curious to hear from founders working on vertical B2B SaaS.

What feels like a constant pain point or bottleneck for you?

Could be distribution, demo scheduling, leads, onboarding, customer success, integrations — whatever consistently gets in the way.

I’m not trying to pitch anything. I’m 18 years old and just want to build a useful service to help SaaS founders.

Really appreciate any input or stories you can share!