It has been this way since November, and it seems like either nobody noticed, or they seem to still enjoy quoting the 30% number. If you make more than $1mil a year you probably can afford to deal with that. You're also probably putting significantly more bandwidth off Apple's servers than an app that's had 100 downloads.
Unity does a similar thing, but it's free for up to a certain income, pay after that.
I personally would like to see that reduced to 10%, but at least Apple responded to the constant criticism that 30% was ludicrous.
From Apple:
• Existing developers who made up to $1 million in 2020 for all of their apps, as well as developers new to the App Store, can qualify for the program and the reduced (15%) commission.
• If a participating developer surpasses the $1 million threshold, the standard commission rate will apply for the remainder of the year.
• If a developer’s business falls below the $1 million threshold in a future calendar year, they can requalify for the 15 percent commission the year after.
Source: https://www.apple.com/ca/newsroom/2020/11/apple-announces-ap...