The 1980 Bayh-Dole Act was a milestone that incentivized licensing, as before this law, universities had little incentive to patent or license the discoveries of their researchers funded with federal funds.
In other words, taxpayers were investing money in scientific research, but those discoveries were not translated into useful products. The law changed this, allowing universities to benefit from their research and encouraging technology transfer to the private sector.
Technology transfer supports entire innovation ecosystems: startups, incubators, venture funds, and research parks that grow around major research universities, attracting private capital on a large scale.