If you have a brand-name app like Runtastic, Netflix, Headspace or whatever, the platform doesn't really matter. You buy the product, because you want it.
It's probably different for utility apps like a different Camera, a photo editor, small productivity apps you need only once per month.
I'm happy about this change and it will definitely affect my bottom line in the range of several thousand euro per month – and I'm an indie dev.
Edit: I just looked it up and calculated the difference. I will make roughly 17,000€ more per year through this change.