Yes!!, i've been wanting this! Very good example of this working pretty well is gamesense, formerly known as skeet a csgo cheat. Back in 2016-2019 in its prime it was known for having the best HVH and legit cheating features and undetectability. Mostly because it was a invite only, and were very strict about limited users, and here and there active users with subscriptions would be given invite codes, that they could pass onto friends. They were very heavy on trying to stay under the radar also so, leaking photos of the forum and the cheat menu etc.. was not allowed and if you were caught leaking the user would be banned off the forum. Not being able to access the software anymore. They stayed undeteced for years meanwhile other cheats were suffering ban waves. Now i know that valve and EAC are extremely different in anti-cheat but its just a good example of how staying invite only with strict rules does actually help.
I mean yall got certain cheats for dayz and shi that be asking for pictures of you and id cards for access and whitelist forms to fill out.
But the devs probably wants to make some money too i assume so, limit user and make monthly subscription cost more.
At the end of the day tho, wont matter if its invite only depending on how its getting marketed and how legit or obvious people are playing with it.
ps......
I aint see no rule about @ other softwares so if i broke any rules im sorry in advance :3