How about this play the Olympics and have success at the next Grand Slam...Zverev, Auger-Aliassime, Tiafoe, Fernandez, and Muguruza...I think young players should represent their country in the Olympics for several reasons, as long as they are not injured.
Among other things, they can often learn a lot from other players, who may have some genuine interest in seeing them succeed. If Berrettini is playing, maybe Sinner could pick up a few tips on his serve.
Also, many times (although not always) these countries invest in these players. Why not return the favor, for what? One or two weeks at the most?