Ps. In mobile its possible to accidentally zoom out of the website, width is not limited to screen size.

The problem is you're competing vs Cloudflare, a huge incumbent who offers this for free (up to a point). So startups won't want your solution. Enterprises are out of question, too, for all sorts of reasons (security, GDPR, cost of change, etc).

It's a cool idea though, and I applaud you for building it.