I get why the idea seems sane, you want to get returns on investments, right? But with governments the vehicle for returns is taxes and investments are often called "grants" (but also loans, credits, etc). The tax system means you can make investments and always get some return. FFS you could invest in a company going nowhere and you still recoup through taxes. The only way you lose in this system is by tanking the entire economy. Idk why this is so hard to understand. Why people think things like research grants is akin to tossing money into a pit and burning it.
I know the current party is anti tax but aren't they also anti nationalization (Words, not actions)? Changing (or adding) your returns vehicle to be through stock only creates nationalization. It increases returns but also puts an additional thumb on the scale. It's very short sighted.
Who knew socialism would come to America wrapped in an A̶m̶e̶r̶i̶c̶a̶n̶ capitalism flag?