Blockchain technology (which powers the Bitcoin) can easily be used to replace CAs, or provide an alternative which browsers acknowledge, provided enough site o

Blockchain technology (which powers the Bitcoin) can easily be used to replace CAs, or provide an alternative which browsers acknowledge, provided enough site owners use it. And going by the high issuance/maintenance fee the CAs charge for issuing certificates, the industry is a sitting duck for disruption by a Blockchain DNS/CA app. I, as a site owner, can just sign my 'certificate' myself and put it on the blockchain DNS/CA app. The certificate will have my domain name, public key. And slso an additional field 'ownership sign' which is something like https://<my https://<my domain>.com/ownership_sign.pem (which is signed by my private key). So if I am the true owner, I can self issue as many certificates to myself as I please. Or there could be some forced limitation to prevent any scalability (cough) challenges. So, the problem you have pointed out is not really with enforcing/encouraging HTTPS, but with the entrenched CA bureaucracy. And I am really surprised, why is it not being disrupted already?