Hm, I was a bit confused by the title, thinking that it was alluding towards classical music having an actual 'value', rather than just to make a career and/or get famous. For making a career, it's still there, just a bit more niche nowadays, same as jazz and some of its forms, and others. I think the only way to get anywhere with that is to just get to know as many people as you can involved in that industry - the chances of striking it lucky and making it big through talent shows is pretty slim, there's too many other people out there with the same idea.
Classical music still has tremendous value, well to me at least, as I work in a school I think the educational value is priceless. You can really teach about the different types of musical techniques, orchestration, and even types of instruments much more easily when you have classical music on hand to demonstrate. And there's a reason that a lot of it was written centuries ago and is still popular/significant now, I wonder how long more modern artists are going to last.