Is Silicon Valley VC Still a Societal Asset?

If you account for the larger geopolitics and cold war, yes, being the best country for immigrants to access capital for innovation has huge advantages. These monopolistic like companies have existed since

1. Sherman Antitrust Act - 1890

2. Clayton Antitrust Act - 1914

and yet the US has still been a leader in almost every category. Big companies don't prevent success or innovation