UBeam sounds like it should have been an university research project, not a startup. Even if the technology does work, is it actually useful and worth its cost?
I'll concede that I probably use my phone less than a lot of people, but this looks like a "solution in search of a problem" to me. I'm still using a Nexus 5 that's several years old, and my battery rarely drops below 80% over the course of the day. (I only charge my phone when I sleep, and never "top it off" during the day.)
When I do need to charge it, I plug it in, and can get a full charge in about an hour, if I remember correctly.
Even if we were to assume that this product is viable technologically (which is a big "if"), my hunch is that it won't be viable commercially for much longer as advances in battery and phone technology make it irrelevant.