I take issue with this. I'm quite certain of the things I work on, but have not been able to execute due to lack of funds.
This lack of execution means no revenue.
No revenue means I'm struggling to fund things myself because I know how valuable the equity I'd have to give away would be worth.
The best, and most confident founders aren't going to be in a rush to trade equity for ANYTHING, EVEN if the revenue isn't there yet.