soldirac creator here.

It IS possible to fund your own question. Anyone can add to the bounty of a problem with the "Boost" option. That is also the primary source of income for soldirac because the website automatically takes 10% of a boost amount, this helps fund other questions.

Forcing users to pay before posting almost guaranteed in very few people posting questions. That was the first model of Lnsolve in 2020-2021 before I change that and updated it to soldirac.