Sweden introduced a similar scheme in 1964, in which artists (broadly defined, having since come to include one clown and one chess player) have been given a basic income, supplementing their other incomes up to a specific level. Artists couldn't apply for this, but were officially selected. The program was stopped in 2010, meaning no new recipients have been selected since. As far as I know, there's been no studies…
Sweden punches far above its weight in game development (allegedly up to 20% of Steam revenue all goes to Swedish teams [1]), so if any people on any Swedish game developers have ever benefited from that program, I'd say the whole country has. That's surely been a huge benefit in terms of tax revenue, plus the gaming industry brings a lot of great minds to Sweden as well as improving their cultural soft power. [1] ht…
https://sv.wikipedia.org/wiki/Statlig_inkomstgaranti_f%C3%B6...