The absence of Venator-type carriers from the Rebel Alliance follows from how the films were created more than from an unavoidable in-universe constraint. Hyperdrive-equipped fighters could launch from a carrier held well away from the target and recover at a different rendezvous after the raid. That would conceal the carrier's position and make attacks appear from unpredictable directions. Imperial interdictors could counter the scheme by restricting the mobility on which it depends. The fictional plan applies distributed basing and operational reach while denying the enemy a clear trail back to supporting assets. The X-wing game is cited as already using cruisers and corvettes for this sort of Rebel doctrine.
Notable Point · 30:27-32:13
A hidden carrier could support dispersed Rebel raids
Star Wars hyperdrives could let fighters launch from a carrier in one system and recover in another, frustrating Imperial efforts to locate their base.