This is a huge factor. When I heard that opening guitar of "Baby Blue" on the Breaking Bad finale it gave me chills. A lot of people who didn't know anything about Badfinger were exposed to that song and absolutely loved it. They rushed to iTunes to buy it. The MCU is pretty much the biggest thing ever and they've had some of the best needle drops I've seen. "Moonage Daydream" in Guardians, "Dear Mr Fantasy" in Endgame, "Immigrant Song" in Ragnarok just to name a few. I've heard people say that Marvel is too on the nose with their song selection but it works for them.