That is what Russia is doing, however the West is sanctioning entities involved in this all the time. That increases risk and means extra work. So Russia can not make as much money selling oil like this and if customers have a choice, it is easier to deal with legal oil. So if oil prices fall, then Russia is going to sell less oil.
That is somewhat true for all sanctions. Russia is going to find ways around them, but even then it hurts Russia.
They are also the main developers of the Mastodon software. It is not just hosting the service. The software needs to be able to compete with Bluesky and right now it quite simply does not. The only way to get the quality needed is to have some full time lead developers. Also they need some proper admins to run the websites. Mastodon social is at 250,000 active users right now, but it is also fairly likely to grow fast with what Elon is up to with Twitter. Just to compare Twitter used to have 7500 employees, with a 1000 today.