What do you mean universities can't commercialize in the same way (I may have misunderstood what you meant)? Due to Bayh-Dole, Universities can patent and license the tech they develop under contract for the government- often helping professors start up companies with funding, while simultaneously charging those companies to license the tech. This is also true for National labs run by universities (Berkeley and a few others). the other labs run under contract by external for-profit companies.