I'd say the number of non-venture-backed software businesses exceeds venture-backed by at least 20:1. See also "patio11's law" https://twitter.com/mmcgrana/status/1260250538299408387?s=20
VC is ostensibly generally accessible. Even accelerators like YC are VC-track.
On the other side, I see many many founders essentially twist their business plan into something VCs want to see because accelerators/VCs are the only source of capital for early stage tech companies.
Funds like Earnest trying to change that.