“Form factor” has nothing to do with it. It’s about creating an impenetrable moat that no one (exaggeration) can cross. Coke is said to have it just because the image of the brand is so universal and so beloved. WalMart is said to have it because of their immense buying power and (more crucially) the distribution network that Sam set up while he was alive, which is unmatched in the retail world.
When it comes to things technical so far, at least, none of those apply. Xerox had a huge brand name, yet when Japanes copiers came in they swept the place. The IBM PC is gone in spite of the parent company’s expertise and history.
Microsoft? Not so much. The developed the OS for a specific environment, then quickly launched customer-ware the worked only on that OS. Once you bought one you had to buy the other. If you had Word, Excel, etc. there were huge switching costs, and nobody wanted to do that. (More to the point, while the IBM PC reigned, business IT guys loved it because “IBM” meant reliability, etc.)
This is “lock in”. Apple has that; switching back and forth from Android to iOS is not like switching from Coke to Pepsi and back. There is a real angst from learning the new system, losing the apps you have paid for, rearranging photo albums, whatever.
In the same way, Warren Buffett’s acquisition of BNSF Railroad has a huge moat, because nobody is going to build another rail line through the suburbs and into the LA Port. It is a “toll bridge” highway that in induplicable anymore, and probably will be forever.
At the moment there is no indication that any one particular robot system (there are dozens!) will have that kind of ‘lock in”, although surely some will be better than others. “Being better” is good, but didn’t save Schlitz from dropping from #1 to #20. Perhaps one of them (or two or more) will find some way to insure that kind of switching cost., although at the moment it’s hard to see how.
But if they do indeed run on “apps” (the nursing home app! The factory app! The cook dinner and clean the kids room app!) maybe there will be a way to make them so unique and so non-interchangeable that that will happen. Again, I don’t see it yet, but nobody sees around every corner, so maybe it will happen.
Being “better” isn’t enough. Lots of companies were “better’ until they weren’t. See: GE, Nike, Blackberry, Yahoo!, PanAm, Ford, etc.