Discord is still the biggest gaming network out there (even though it's not quite limited to games anymore), but it's still having trouble finding ways of monetizing its millions of users. The whole NFT integration plan fell through after those users nearly rioted, so now Discord has turned to pay-walling in order to generate more money.
Discord Premium Memberships is currently in testing with "a small group of communities" who can "gate part or all of their server behind a paid subscription."
Read more on thegamer.com