I will agree that it would be tough to really do the lifts to any decent percentage in a commercial gym. But as far as learning how to do them, they just are not THAT hard to learn how to do. Especially if you make up your mind that you are going to learn them and then put in some decent work you can learn a decent power clean in a couple weeks, really less actually. I taught MYSELF how to FULL clean and FULL snatch. I don’t have world class technique but mine is definitely ok.
There are world class lifters who jump, even once they reach world class level. There are many who jump and probably sprint at the junior national level which overseas is probably equivalent to the US senior national level.
Ivane Grikurovi – arguably the greatest PERSONAL weightlifting coach had/has his guys do jumps. He has been the PERSONAL developer/trainer of Kakhi – Oly Gold, Asanidze – Oly Gold, Kolecki – Oly Silver, Kasabiev – 4th Beijing