I think you need to read the table again. If you have that volume you shouldn’t be on the most expensive per install plan. And if you’re on a higher plan you wouldn’t qualify for the per install pricing at all.
You’re right, some studios are going to be forced to switch to the Pro plan to save on per install pricing. That just seems like a really frustrating forced upgrade.
My game has been around for a few years and has over 500k life time installs.
I May be getting very small install rate per month now, but would still have to pay a lot.
They are offering a free upgrade from Plus to Pro for one year, but that does nothing once that time elapses - you have to pay the Pro fees or drop down to Personal, which is not viable for most games.