There are so many singing competition shows on TV right now like The Voice, X-factor and other talent shows as well where aspiring singers are joining with the hopes of winning. The prizes and fact that the winner can become popular are very appealing to all the contestants that is why we can never blame them for lining up, patient in waiting and rehearsing just to achieve their dreams.
Those that have won already will work double time to impress their audience and their fans. It's hard being in the limelight but I guess if they love their work and what they are doing then it will not be hard for them. There are also many studios where anyone can practice, I am sure that there are hi-tech gadgets and instruments where they can get them.
If you have dreams, chase it!