Age isn't necessarily the issue, the players have to be good enough. If Licina was a stud he'd be playing already, but some players need longer.
The issue Italian football had for years is that it was an elite league with extremely high quality players, very high prestige, and the pressure for results was so high that only truly exceptional young players were trusted to start. Coaches went with more experienced players if you are looking at a younger player of the same current level. They aren't looking at 2 years down the line by which time they'll be sacked anyway if they don't get results, so they aren't interested in player development. But now, I don't see the same reasons. The mindset needs to change to developing players more. Serie A doesn't have to think of itself like the Belgian or Dutch league, but a bit of that mentality here and there would benefit everyone.