I think infantry is the only answer, really. The army still finds it really essential to have lots of guys walking around on two legs, who can go anywhere their

I think infantry is the only answer, really. The army still finds it really essential to have lots of guys walking around on two legs, who can go anywhere their opponents can go. And often carrying a serious weight, because having stuff with you is very useful. They have lots of tracked things and flying things too, obviously. All of which will be ever more automated, too. I can see other niches, like carrying wounded hikers out of canyons where you can't fly, but agree that hardly sounds like a billion-dollar industry. Industrial uses I'm more dubious, I mean any warehouse already has a nice flat concrete floor... lots of uses for vision etc. but not so much for walking.