In web and online infrastructure pretty much nothing is out of your control except for two things: ISPs people use and domain name registrar you use for your domain name. And even domain name registrar centralization can be mitigated against by having multiple domains from multiple registrars and promoting different domains to different users and having backup communication channels to inform users about new domains in case something happens.
Other than that it's your choice whether to make your infrastructure dependent on a bunch of unreliable centralized SPOFs from big corporations or build highly available infrastructure relying on servers from many different providers running your own DNS servers with DNS routing, failover, etc. You will definitely beat Cloudflare's availability this way many times over.
Other than that it's your choice whether to make your infrastructure dependent on a bunch of unreliable centralized SPOFs from big corporations or build highly available infrastructure relying on servers from many different providers running your own DNS servers with DNS routing, failover, etc. You will definitely beat Cloudflare's availability this way many times over.