If we could waltz into Best Buy/Walmart/Target and pick up a "Silicon Valley" camera that used the latest image sensor technology and didn't require a recurring subscription service to use, most of us wouldn't be here!
But here we are...
IMO, Dahua/Hik serve the "professional surveillance" market. Their product is designed to be sold/installed by channel partners that will meet with clients, understand the client's needs, then design, install and support a Dahua/Hik solution for them. Their product is NOT designed to be sold/installed directly by end users like us.
I'd be very surprised if there are a lot of professionally designed/installed Dahua/Hik solutions that have clients who want to access the cameras from a web-browser. I'd guess that most clients access the cameras through a NVR using the Dahua/Hik smartphone/computer app primarily, web browser secondarily. And with by far the largest web browser marketshare going to
Chrome, I can see why that'd be the browser focus.