Keep in mind, this is according to Star Wars canon, so flame me not for anything that is impossible, but you have part of a good point. The majority of travel done in the star wars universe is via hyperdrive, which functions vaguely as a wormhole generator - the ship travels to an alternate dimension, and the travel time to an exit point is vastly shortened - thousands of years to hours. This, combined with nonsense like inertial dampeners and "relativistic shielding" allows neat sidestepping of the massive issues that arise with FTL travel. The drives are bending space, and apparently the alternate dimension the hyperdrive links to is connected with the "real world" in enough of a way that all travel has to avoid gravity wells and such - which is how interdictors and such could function. All hyperspace engines are classified against a measured standard speed - the Class 1 hyperdrive. Commercial and public ships use Class 1.5 or Class 2 drives (taking 150% and 200% the time a Class 1 would, respectively), but the Falcon had an illegally obtained and highly modified (also highly unreliable) drive that would "make .5 past light speed." At any ratem the hyperdrive was the main transport method on ships anyways, and the ships sublight drives are basically fancy boosters anyways, mainly for takeoff, maneuvering, and docking.
tl;dr Kids these days need to read their Timothy Zahn.