Making high-quality music used to require investment. Expensive instruments at a minimum - but if you didn't want to sound like Kenny, you'd also need high quality microphones, sound damped recording studio, mixing desk, specialist technician to operate it and several high-end recorders capable of syncronised operation.
That's all changed now. One person working on consumer, affordable equipment can - on a purely technical level - match that quality with comparative ease. It's down to the level where people can and do make music as a hobby, without any expectation of payment.
There are still things that cannot yet be replicated in the home studio. Good acoustics and a studio band, for starters.