There is a reason that I can buy most of the music I like for $1 or $2 (or $5 at Half Price Books).
No a lot of call for old John Michael Talbot or Phil Keaggy music.
To stretch a metaphor further, neither Dandy Don Meredith nor Roger Staubach never made a million a year until toward the end of their careers.
$300,000 for a Spotify replay of just one of your songs (no effort on your part) may not be fair to you, so get a better music agent.
And then we can discuss how music is better it is now, in the days of Sony Music and other conglomerates owning everything.