The energy economics in space are also a bit more complicated than usually thought. I think Starlink has been using Si cells instead of III-V-based ones, but in addition to lower output they also tend to degrade faster under radiation. I guess that's ok if the GPU is going to be toast in a few years anyway so you might as well de-orbit the whole thing. But that same solar cell on Earth will happily be producing for 40+ years.
Also the same issue with radiative cooling pops up for space solar cells - they tend to run way hotter than on Earth and that lowers their efficiency relative to what you could get terrestrially.
The elephant in the room for all lunar scenarios is lunar regolith. Even ignoring the toxicity to humans (big problem and will happen quite quickly for any humans there!), it will be a big long-term problem for robots and machinery in general.
My take always was that their long-term vision remains very hard to implement in practice, particularly in a consumer-friendly form factor. They should've kept working on it in a R&D capacity in the background, and pushed a more limited AR (or even VR..) product to build a brand, ecosystem and start generating some revenue. And, of course, figure out what the hell their product-market fit was going to be! The quarantine era, in theory, could be a golden age for AR/VR products that deliver a compelling experience.
Which is also to say, the charismatic/ crazy founder with a reality distortion field is great and all, and can move mountains and often succeed - but sometimes reality hits with a thud. To some extent, their challenge was one grounded in physical limitations of our technological capabilities in the 2010s. In the 2030s though..
Not sure if Facebook is stepping away from AR/VR. Oculus/ Facebook reality labs is still hiring plenty of folks in the optics/ photonics world.. even making announcements over the last week on open positions.
When you're buying for your kids, particularly in the newborn -> infant -> toddler range, Amazon is a nightmare and we're steering clear of it. Especially since pretty much everything will end up in the kid's mouth. I even ordered formula a couple of times, figuring it was regulated, but something seemed off in the packaging and consistency.. had to throw them away. Just completely unacceptable! Brick and mortar it is.
Also the same issue with radiative cooling pops up for space solar cells - they tend to run way hotter than on Earth and that lowers their efficiency relative to what you could get terrestrially.