The person that made this site would probably be sued if he/she sold a logo to a company that's too similar to existing work, arguably not before the company it

The person that made this site would probably be sued if he/she sold a logo to a company that's too similar to existing work, arguably not before the company itself gets sued. Hence, for new companies it's a gamble as the legal fees could put them out of business. Maybe there is a disclaimer somewhere on the site, but I haven't found it. Regardless, finding out whether or not a logo that you produced (or a design studio produced) is too similar to already existing work is difficult as images cannot be as easily searched as plain-text. This is hard for design studios too. Also, and this is speaking as a layman, but initiating such a legal affair probably requires a trademark.