Amazon can do that better and cheaper than you if you start to become successful.

That doesn't generate enough revenue to sustain development.

Here's Hashicorp's financials: https://ir.hashicorp.com/news-releases/news-release-details/...

They made $102M of revenue from support in the latest quarter. Their cost for providing the support was $15M, and their entire R&D costs were $54M. (Professional services was a tiny amount of revenue in comparison, and at break-even.)

Clearly support and services could easily generate enough revenue to sustain development. What it can't currently sustain is their $91M / quarter of sales and marketing.

They need $91M of S&M to get $102M of revenue though, so the $11M net doesn't cover $54M R&D.