I don't know, I get to use uBlock when I use web apps and I have some control over the client even on my phone. Native apps can basically do whatever they want and users are waking up to this.

I would like all of my applications to be sandboxed by a browser I have control over.

If a website is popular and does the basics well, it doesn't matter how 'shitty' the technology is.

Amazon.com has easily the most hideously designed product pages out there. Because sellers can "customize" the product page, you get their content (usually hero images with tiny text) mixed in with text-only product details, "users also bought" carousels, Q&A and Reviews all jammed together.

And they're still doing better than most large ecommerce stores (Walmart, Best Buy etc.) because the stuff that matters (pricing, delivery time) is better than the competition.

Switching to the Amazon app doesn't fix any of these problems because it's primarily a content and UX issue.

Of course if a store is just plain cheaper and over all quality wise better, it it's not that important that it looks hideous and abandoned. But to some people it matters. And if two stores provide the same product at the same price, I think I'll prefer the one that looks nicer.

It doesn't decide everything, but it's pretty certainly a factor (although Amazon must have determined that it's a small one to them, as they are still micro-optimizing for other page-related aspects like loading speed).