I will say that you have to separate out two distinct groups of "they" here!I am wearing a tinfoil hat right now, but I suspect that this is because fewer people are drafting, and also so that they can point to this and say "See, I told you that it's not worth investing in Limited! Let's just make Commander cards instead."
R&D is comprised of - even the very old guard that didn't get hired after a stint in competitive play, and the Great Designer Search winners, and so on - chronic, inveterate, unrepentant, lifelong drafters. I'd be amazed if there was even a single vote there to kill Limited. Probably actively scrambling to find compromises like "uhhhhh can we call them Play Boosters" just to keep draft alive in any meeting where anyone even hints at causing minor damage to it.
People who look at spreadsheets for dollar bills on the other hand, well, It's A Product. Product Make Money.