If the rebuttal is "yeah but advancements improve the economy" -- The private sector can fund projects which are opportunities with an economic basis, they can take the risk and they can see if it is profitable in the market (ie beneficial)
If the rebuttal is "How will America stay competitive?" We cant seem to keep trade secrets anyways. [1]
[1] - https://www.bbc.com/news/world-asia-china-64206950
Edit: Also the 4 years at a time thing is probably a better choice too, because it makes them less twitchy politically. You get your 4 years, regardless of who's team is in office. This should be a win regardless of your affiliation.
That is a very narrow view of advancing society
Government funding can help with things that we decide are good for society, but not quite profitable financially.
Examples: CDC lead exposure research, Earthquake Early Warning System… even the tech we use today came out of non-commercialized funding (NIST Post-Quantum Cryptography and ARPANET).