> we might have a bunch of browsers with 0.1% marketshare. How? Ludicrous. And proprietary browser plugins, really?

Such a market works for cars (kinda), vacuum cleaners, hifi, golf clubs, burgers, synthesisers, sofas, buildings, DIY tools, dresses, shoes.

We also had more browsers back in the 00s, and into the early '10s.

So, yes. Really.