Mac bias...no Sonar, Sampitude, or Mixcraft. Bitwig has been on the market for less than a year.
As to tracking sales, most companies are privately held and do not publish info on sales. The one place where you could track sales was stores that sold software in boxes, but with direct digital downloads taking over, that's less of a factor. I do have access to MI Sales Trak, but it's proprietary.
FWIW, SONAR is doing fine.