I never thought about it from that perspective before. Quite possible. I would buy some Marvels, but only an issue, here and there, and so the continued story aspect might've stopped me connecting to them as much as I did with DCs.
When I first started reading comics, around 8 or 9 years old, it was primarily DCs, just before and, very luckily, during the classic 100 page era, along with a small number of Marvels. At the time, distribution of Marvels to the UK was very patchy, and a title I'd been following would suddenly, unexpectedly, disappear from the racks; problematic if it was a multi-part Marvel epic, whereas DCs didn't really suffer from this irritating problem. One reason I never read Starlin's classic Captain Marvel / Thanos in its entirety until much later.
That said, I completely switched polarity in the late 70s, once imported cent copies were more widely available, I was older, and so more complex, extended narratives such as the Claremont and Byrne X-Men saga became more appealing, and no longer quite so daunting to complete runs of.