georgemarousi : oh boy, have you got my number! Actually, I found the same thing when I was playing online games (MMORPGs), which I gave up for the guitar. Younger people advanced their characters by spending endless hours playing. Those of us with fewer hours took longer or spent more (real) money. I used to get quite cross with gamers who referred to their time as "dedication", but disparaged those of us with less free time as "lazy".
Rognvald: Check Ursula K. Le Guin's story "An Die Musik", in which she explores exactly your point about lost potential. It's in her collection Orsinian Tales.
Then again ... I can buy myself nice guitars, but I can't buy myself stretchy fingers.
2016 Cordoba C10; cedar top, rosewood sides & back, mahogany neck
2011 Washburn WD35S; spruce top, tamo ash sides & back, mahogany neck