Speaking of rich history, they also developed the code that powers (or powered) PostScript, Type Manager, Illustrator, Premiere, and Acrobat, amongst others. Oh and lest we forget, a crazy gold plated graphics prog with a halo effect that exceeds damn near all others in reach called Photoshop (having wound its way to Adobe from the Knoll brothers). If PS isn't an "industry standard," I know of no another.
And thus your answer.
Adobe Flash and Reader remain the ugly ducklings in the pack. Free for the taking as it were, so who's to complain (except us)?
