I get what you're saying, but the vast majority of people aren't going to bother going to someone's random website. I think the best you can do in this day and age is put your eggs into as many different baskets as possible, a personal website being included in that. That way, you can maximize eyes on your work and one platform suddenly losing popularity or going to crap doesn't ruin you.
I and others I know would. Granted we're not the vast majority, but my feeling is that people don't do it nowadays because they've been trained not to. If bands went back to their own sites, I'd say people would follow.
