Earlier quoted context omitted.
It absolutely make sense to make a state of the art app on a platform if it's key to the business. Also resources is not the problem, even big companies (like banks) make low cost web apps instead of native ones if they can. I don't see why Apple should facilitate compromised user experiences instead of setting the bar higher.
Also a PWA can’t compete in quality with a proper native app, should a competitor ever build one you’re toast. The question just revolves around how integral an app is to the business. Online banking probably requires an app. A restaurant that offers online ordering probably does not. A video game requires an app. An online encyclopedia does not.
No sitting around waiting to download and install updates. No corporate phone-wiping security policies. All the features that mattered, even if Safari didn't look quite as nice and missed one or two.
PWA vs native app doesn't matter at all to the competition, they are gonna be there regardless (esp. B2B scenarios). Whether a website or app works better for B2C is really highly market dependent.