Step 1: Get everyone to use your free internet filter

Step 2: Alter filters to mark newly-registered domains and low-traffic websites as "potentially harmful".

Step 3: Charge a lot of money for "business verification" - which gives them a fancy badge somewhere and incidentally makes their website trustworthy in the eyes of your filter.

Step 4: Profit!

The Big Tech cartel has been doing this pretty successfully with email (see the weekly "Don't self-host your email" posts), why should we assume they are doing anything different with browser-based website blocking?