With Firefox's declining usage share (~35% => ~5% over the last decade), while unfortunate, it is easy to see why business folk will be less inclined to invest

With Firefox's declining usage share (~35% => ~5% over the last decade), while unfortunate, it is easy to see why business folk will be less inclined to invest in QA here now. But on the other hand, Firefox developers are increasingly prioritizing compatibility issues, matching Chrome's behavior in order to mitigate this phenomenon. I've recently switched from Chrome to Firefox nightly on mobile and desktop, and I have to say, I am actually very impressed with how few issues I've run into.