I mean, I get what you are saying and, to a degree I agree.
I don't really have a problem with people paying to "Test" things but there needs to be a clear understanding of the state of the product and the expectations for what you are spending.
ATM the product is set in 3-ish phases:
ALPHA (Now)
BETA (EA)
Release (1.0)
But the implication of the states is:
BETA (Now)
BETA-ier BETA (EA)
Release (1.0)
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If you look at the ARR (FFXIV) re-release it showed you that some brands have an amazing amount of loyalty. SE took a huge hit for that test of loyalty though. Decades of brand recognition was on the line as well as millions of dollars. MNM has no brand loyalty, people in their closed alpha were exploiting and trying to keep those exploits secret.
To even remotely slice a pittance of that 20m disenfranchised MMO players from the market you gunna have to pull way better numbers than their socials pull.
Also, a majority of that 20 million will never touch this game, they are the MMO-Mobilers. Best to assume their potential market is a fraction of the EQ / OSRS scene and a sliver of a fraction of the general MMO scene.