(Full disclosure: former Twilio employee and current Twilio stockholder.)
I didn't know, and apparently yes, Twillio employees get RSU at entry as a standard perk. Now, those are still just RSU.
I couldn't get an exact number but if they are in line with most other companies, the stock raising while hypothetically the employee compensation goes down the drain would still a net negative for employees.
Stock buybacks benefit those with previously free capital while at the same time hurting those without free capital currently. In a capitalist system this does hurt workers quite a bit.
Are you saying the price of an individual stock is what's pricing people out? Having trouble reconciling that with the fact that only a few stocks are above $1000 (which doesn't seem to hard to reach if you want any substantial savings), and then stock splits and fractional shares happen often.
Or are you just saying that they will own a smaller percent of the total stock, so they have less say as stockholders?