Re: Web app? No thanks.
"Think of about 25 years ago when companies used to create PC applications to download to view their product catalogue or even early purchase of goods etc. You would never download an application from a company onto your PC nowadays - just to see marketing information or a function specific to that company."
True. I wasn't willing to do that 25 years ago, and I'm not willing to now. But I see no reason why PWAs would be needed to accomplish this. A normal web site does the job nicely.