I'm going to look at Render, but Netlify is more than just a CDN. Having an integrated CI/deployment pipeline is one of the features I've come to use a lot; an engineer can now open a PR and get an autogenerated staging link that be reviewed before going to prod.
That said, if Render supports the same workflows I'll be seriously looking at moving.
Unless you only host static content, isn’t Render vastly more capabale/different anyway?