I'm not sure how well the petitions will work, but I know about two of them.
Mastercard: Sex Work is Work. End Your Unjust Policy. | American Civil Liberties Union is aiming for 150,000 and is currently sitting at 142,000, while;
Petition · Tell MasterCard, Visa & Activist Groups: Stop Controlling What We Can Watch, Read, or Play - United States · Change.org doesn't seem to have a goal but is currently sitting at 135,000.
Viewing post in Russell 5 now on Patreon comments
Well, sex work is work probably mean about real people working in the sex profession. People can just cancel their credit card and look for different payment processes too.
I just cancelled one of my Mastercard cards last week and think about use one from a different company. At least here in Brasil exist others but people can just use other methods of payment too.
I found developer that just move his Novel to a adult focused website. But his story have a lot of sexual visual content.
The creator of Echoes from Valeth https://aucyonproject.itch.io/echoes-from-valeth.
... Look like need pay to download it there ... or just the option to choose.