Isn't state ownership of the means of production called Socialism? Well don't answer really, it's a rhetorical question, the government buying ownership of new firms is socialist by definition, and this is not a "Obamer is socerlist derp derp derp" silliness, but a real concern.
This will distort and warp the investment field. Companies that qualify for federal treatment not only get VC funds instantly doubled, but they then qualify for a whole host of competitive advantages such as the listed "patent fast tracking" not available to those who don't drink from the fountain. In other words, those not participating are penalized.
VCs are individuals often with business acumen and understanding of entrepreneurship who do due diligence and keep tabs on their investments. The largest bureaucracy on earth and in history can not make the same decisions, it is not possible. But it does have infinite funds because it owns currency printing presses, and doesn't lose anything if the businesses fail, so there is no risk to them.
To understand one of the many problems here, take the word "government" out of this and replace it with "Bob Smith". Bob Smith is an investor funded with a printing press that he prints counterfeit dollars with to invest in companies. Without any concern for business plans or profits, if any VC in the world invests in a company, Bob agrees to double their investment on the same terms of ownership. Also, Bob has arranged with politicians to create many special benefits available only to firms he is invested in, such as expedited patents that aren't looked at as carefully for those in his special Bob Smith fund. Companies they are competing with don't get the same special legal privileges unless they agree to sign the contract with Bob and give him partial ownership. If the business fails, Bob prints more money. If it succeeds, he takes a slice of a real business for himself. Does this seem like a good idea?
This is not a good situation nor can it end well.