If you are interested in building this, I have product and engineering experience
If you are interested in building this, I have product and engineering experience
My guess is buymeacoffee isn't the problem, but their payment provider. They maybe can't justify the resources to switch providers and so its easier/cheaper to just drop those countries.
If you can find a payment provider that will service a "buymeacoffee-like" business in the open countries, then I'd be interested.
Many of Telegram payment-related services use https://smart-glocal.com/, which is registered in Hong Kong (with a UK company handling EEA operations). They don’t say it on the website, but I believe they do work with Ukrainian (and apparently even Russian) citizens and can handle payouts there. (Note, however, that Smart Glocal is owned by a pro-Kremlin guy from Russia: https://en.zona.media/article/2022/08/08/premiumdonate-trl)