Your ending bit, not really re PA, because PA is not at all tied to Access. The other in your list were like that. Now Access has nothing to do with web depolyment.IIRC, LightSwitch replaced SilverLight, and positioned it as an LOB RAD tool, but it didn't gain much traction, and MS replaced it with PowerApps. Is PA similar to LightSwitch?
I thought AWA's was a viable solution because it mimicked how we create tables, queries, forms, and reports in Desktop Access. It essentially had the same client UI. Access developers had high expectations that it would have a VBA_like language, but instead relied on event based Data Macros and was lacking the rich functionality available with VBA. So only a handful of Access developers adopted AWA and MS retired it in 2017.
So here we are again, for the 4th time, in the same dilema. First it was "Data Access Pages", then came "Access Web Databases", "Access Web Apps", and now "PowerApps". Next up, "PowerAI". . . "Hey AI, build me a web app with PowerApps that works just like Desktop Access NorthWinds2 application."
I thing PA is much less like the Access model than Lightswitch was. Lightswitch was alive for about 5 years and evolved well in that time. As I understand it, Microsoft abandoned it not due to lack of popularity, but because some patent trolls sued them or threatened to around some part of the underlying tech. It still feels nuts that Microsoft let it dry up for that reason.