I rather enjoyed 'UK's Best Part Time Band'. (I didnt see the other one).
I have never regarded music as competitive.
I know it's treated that way. Album & singles charts. Battle of Bands, talent shows etc.
MS makes a good point about John Martyn.
We can all think of major artists who could never cut it in a talent show. Dylan, Waits, etc. and if you did you would stifle their talent.
I think all of us have some crazy notions about music; myself included, but competition sits squarely in the crazy corner.
I don't think that talent shows have any creative value.
Can you become famous & make money from them? Yes.