How do you propose that the authors of Sublime Text make a living?
Road projects are funded by the government at some level - taxes and municipal bonds. I'm not sure how that would work for software which has a potentially worldwide audience.
There's also the "what gets built" is determined by the government. So, office products get funded - but not games (unless you're fortunate enough to get a government grant https://store.steampowered.com/news/app/2162800/view/3729584... ).
And do you want to run a government funded operating system and web browser?
I don't see a model where this works... unless you're thinking of toll roads as micro transactions and advertiser supported billboards while playing games.