This is unfunded and aspirational. The parties will cooperate to try and make it happen. SpaceX with successful Starlink commercial services will have the funds to make this happen.

A really useful and interesting Starship space station with multiple Starships would need to have Starship proven far safer for moving a lot of people.

Need proven safe starship. After using it for package delivery with ten thousand international cargo flights per year hopefully in the 2025-2028 timeframe. High volume human orbital and high volume rocket passenger flight have very similar requirements for proven safety.