Seems reasonable for wikipedia to want more money year on year every one wants to see the platform grow. Obviously they need to cover more than just hosting costs trying to do anything for the public good results in you getting sued by every company thats trying to commercialise that good.

That being said the lack of transparency is alarming why not be public about it all? Sure some will use it against you but the people that actually care and fund them won't really care what its being spent on as long as the quality of service remains good.