If Flash hadn’t sucked harder than a neutron star, that would be an argument to have. People install lots of proprietary plugins today. Flash would’ve been just one more on that list.

But it did suck, and badly. It crashed the browser all the freaking time, often hard enough to crash the whole OS. (“But the OS shouldn’t let that happen!” True, although even with that said, it was in the short list of common apps capable of crashing that badly. It was almost a talent.)

Flash was horrid. While idea was fine, the implementation was terrible. No mobile OS could have run it solidly and without sucking batteries like no tomorrow. Flash in the right hands could have been nice. We’ll never know because that never happened.