I was going to say the same
thing. It was nice as their native save format could still be opened anywhere.
But you did need to remember to export if you didn't want the extra fields increasing the file size. I remember finding fireworks pngs on web pages many times back then.
If you play Fortnite right now (until Friday June 7th). You can speak in realtime to Darth Vader, he replies in his voice and in character, he knows who’s playing (the name of the character skin). The technology is here, and used in production of major games. It’ll be a big tide sooner than what people expect.