There are lots of apps sold outside the macOS App Store. I’m unaware whether their vendors have paid a commission on those sales. Are they now affected by that

There are lots of apps sold outside the macOS App Store. I’m unaware whether their vendors have paid a commission on those sales. Are they now affected by that move or is it only limited to iOS? Otherwise it would look like you know sacrificing your knight to capture the rook in chess-speak.