Your nick hints that you personally indeed have some real life use case for that  

However, this does not give a lot of credibility in the business world outside porn.
Actually Verge has closen ALL possible open doors to someting more serious, no serious business enterprise want to get officially be affilated with porn, easy as that.

This is NOT a big announcement in my opinion. Its after a scam, the next worse outcome to be honest.

Thinking about it i even doubt that the real use case is indeed there, actually again, it may rise a lot more problems. In many countries pornsites need an age verification system, you can not bypass this that easy.
The ONLY use case i right now can think about are "recurring" membership fees.

Actually, if now it will be released that the so called partnership will be with mindgeek, than all it will be is an advertising campaign costing Verge 75M Verge for having them on all pornsites. We have to wait to see if this is the case, but IF so, than its some upper bullshit 1st class and not a partnership with mindgeek, but just being their clients.

The Top 5 you mention? No way with such "partnerships", but at least Verge should stay in the Top 50 for sure.