Agreed. Lasker and Capa relied on talent and didn't study much. AAA was able to beat Capa by combining his unique crazy brilliance with hard work and a deep study of Capa's games.
I think this idea that guys like Morphy and Capablanca didn't really study and were just natural talents is false. Morphy clearly studied as he was up on all the opening lines of the day. He had some of the best opening preparation for his time and it's clear he followed the games of all the major European players, even after he was no longer an active player. I think he was studying as much as everyone else, he was just a lot better than them too. :)
A flash in the pan doesnt win every event they enter ( except 2 , he finished 2nd in both of those ) for 10 years .