It is not that someone may be the next Beethoven, but to me even in his time, they wrote about what was happening also in their own way. It may be the question of whether anyone wants to be a Beethoven or so?
They may just decide that the money is not there, and I can enjoy immensely more John Williams's ET music more than even Beethoven.
Of course there may be others, but hearing them may be time consuming to find and then back then in Beethoven's time they did not have electricity, Internet, TV, movies, electronic gizmo gadgets, and perhaps more of an audience that needed music more back then for an outlet with the way things were living at that time.
Anyone can look up his life at Wikipedia. All I ever heard is that virtuoso pianists have to practice at least 7 -1/2 hours or more a day.
I know I just do not want to do that, and I am sure there are others out there in that kind of environment that also do that with other instruments.
Just the majority of people it seems just does not listen as much if at all to that kind of music.
I know without even having more people in this world nowadays as back when, they have heard John Williams's music a lot more, a lot more people.
But music is always changing so all I was bringing up is perhaps some people that others think are that way nowadays and some that really are not, but do not sound even close to Beethoven, or Bach, or Brahms or anyone of those creators of music.