It's cool that stuff like vector file formats is still being reinvented. What's the new idea(s) here, though? Like, I get that it's new and has better features

It's cool that stuff like vector file formats is still being reinvented. What's the new idea(s) here, though? Like, I get that it's new and has better features (better compression, faster decoding, etc.) --- but what are the new ideas or insights that led to this design?