B2B builders with a live product: what's stopping you from getting paying customers?

Shipping has got fast. A small team can get a working B2B app out in weeks. Getting customers hasn't got any easier.

I'm exploring whether builders would share one sales and onboarding team. I'm not selling anything here; I want to know if the problem is real first.

If you have a live B2B product:

• What's your biggest blocker to paying customers right now?
• What have you tried (ads, cold email, agencies, content, marketplaces)?
• Have you paid for help getting customers? Did it work, and roughly what did it cost?
• Roughly what is one customer worth to you a year?
• Would you share a sales team with other builders, or does that feel wrong for your product?

I'll post a summary of the answers in the comments in a week.