I know why this guy isn't famous. He's copying the harmonies of Chopin and Liszt and the music isn't original or interesting. Also, this pianist has no clue what he's doing...he keeps looking around...? If he's not performing don't post him as if he is...
For starters, I prefer music that sounds like Chopin or Liszt.
Secondly, if you think it is an imitation of either's style, you are wrong. The composer, at the time, was performing Rachmaninoff's 3rd and that work was the inspiration for the Waltz from his Romantic Suite op. 10. Carl Verbraeken is the chairman of the Belgian composer's association and has written hundreds of works including string quartets and other chamber music, and a vast body of romantic piano music. All of which is available for free, to anyone, if you were to send him an e-mail.
Furthermore, regarding your comment on Geert Dehoux' performance: you should check out his other videos (which include a good studio recording of Liszt's Mazeppa, and some rarely recorded virtuoso work by Villa-Lobos) before saying something like that, which is, IMHO, just pure ignorance.
The man is a former student of Cziffra (and one of his favourites too, I've seen the letter of recommendation he wrote for him after his studies, which you can in fact see yourself if you Google for his name) and has taught at Bogota Conservatoire for years.