This reminded me to look up Vasalgel again (a single-application, non-hormonal, long-lasting, reversible male contraceptive that is unfortunately not yet commercially available), and I see that it seems to have taken a meaningful step forward:
With an option like that in the wings, and not yet shown to have any ill effects in men so far, it's hard not to cynically think that hormonal birth control is pushed forward because a monthly or daily pill is far more profitable than a once-in-a-decade injection / flushing.
https://www.parsemus.org/humanhealth/male-contraceptive-rese...
Apparently a company's moving forward with an attempt to productize it: https://www.planaformen.com/
With an option like that in the wings, and not yet shown to have any ill effects in men so far, it's hard not to cynically think that hormonal birth control is pushed forward because a monthly or daily pill is far more profitable than a once-in-a-decade injection / flushing.