I know people are (rightfully) worried about centralisation on the Internet, but I still wonder how come there's virtually no "competition" to reCaptcha. Even f

I know people are (rightfully) worried about centralisation on the Internet, but I still wonder how come there's virtually no "competition" to reCaptcha. Even from one of the "centralised" players. For example, even Cloudflare, which has its own "checking your browser" protection, still uses reCaptcha in some other cases... Why doesn't Cloudflare offer a reCaptcha alternative to their customers? (a transparent one, more like reCaptcha v3 rather than the intrusive 5-second one...).