It's definitely innovated the form of marketing boring old shit into something new and revolutionary.

"Revolutionized" is a frequently-abused superlative, but they have made some significant improvements to the coworking space model. In NYC, they have multiple locations. You can pay for membership and use whichever space is convenient for you. Their facilities are great. They have some nice perks, ranging from minor expected conveniences (WiFi, copy room, kitchen, etc.), to silly hipster nonsense (who the hell actually likes kombucha enough to keep it on tap?), to things they do better than others (mail room, easily-scheduled conference rooms, exceptional and constant cleaning). They also allow businesses to scale up by offering private mini-offices inside the larger coworking space, which is a nice place to call home while you transition from a two-person moonshot to a twelve-person startup. They didn't invent anything new, but they do it really well, conveniently, and with multiple locations so that you can deal with one company in multiple geographic locations. I don't know if that counts as revolutionary, but no one else does it that well.

I don't think they invented any of the things they do, but they made them much more prevalent.

Renting commercial space and brining it up to spec to be usable is a lot of work and overhead that a small or startup business very much should probably be allocating elsewhere (building out conference rooms, wiring for power and networking, placing WiFi, entry security, decoration, etc. etc. etc.) It all ends up being extremely time consuming and taking twice as long as best estimates generally disrupting everything, not to mention the years long leases, enormous deposits, contract negotiations and other upfront costs. It is at least somewhat revolutionary to have turn-key office space become prevalent.

Not only did it revolutionize the commercial property business - it also then proceeded to disrupt that revolution with a counter-revolution.

(And no, it absolutely hasn't revolutionized anything, but when you're a tech company everyone feels obligated to give you more credit for some reason)