This is one thing that Lemmy REALLY needs to work on. The hobby- and topic-specific communities need to grow. Lemmy is currently dominated by like 5-10 communities, which is fine, but it really falls short of the experience I had on Reddit in that regard.
I think live sports is really the only reason most people pay for TV anymore. The rest of the content is available online on one of the 3,000 streaming platforms.