This is something I’ve taken for granted as per app volume control is integrated into the OS on Motorola phones and I’ve been using mid range Motorolas since the Moto G 4 in 2016 (they offer a reasonable price, reasonable performance, microSD card and headphone jack).
Then I was setting up a Samsung tablet last weekend and was horrified to see I had to use the Samsung store to download Sound Assistant for something I had just assumed was a standard OS feature for close to a decade.
What steps can be taken to mitigate this?
Be an employer of choice. What can you do to make people want to work with you, not out of necessity but because you are better than the alternatives. (Pro tip: if you’re paying the lowest rate you’re allowed to without braking the law you better be offering some other incentive)