I empathize with the sentiment, but if you want to get paid for your open source work, surely it would work better to set up a Patreon and point people to it, rather than write "send me a six figure contract or fork this!" in a GitHub issue. It's also weird to use a license that explicitly lets Fortune 500 companies use the code for free, and then write that you don't want them to do so in the issue. Just change the…
Marak doesn't want to prevent big companies from using his (?) code, he's saying that he won't support them for free anymore. Read the Github issue again, carefully.