With that said, it does look like Nebia is solving a real problem (their shower head uses 6 gallons of water for a shower vs the traditional 20 gallons).
It appears they have a Kickstarter as well: https://www.kickstarter.com/projects/1499369835/nebia-shower...
Think of it like Tesla for shower heads: Yeah, its expensive. Yeah, they're selling upmarket first. But it has a the potential to save a lot of water across the world if they ramp quickly and can drive the price down. (EDIT: Luckily, you don't need gigafactories for showerheads. It appears that their design can use traditional manufacturing methods, so it won't be terribly capital intensive.)
Places where water is a cost center (Hotels, AirBnB hosts, gyms, etc) would probably be the primary demand drivers to start.
I concede that anyone could copy a shower head and that you're relying on the rule of law to protect your invention. I don't see the problem with that, as that's how most manufacturing operates in the 21st century.
That is highly dependent on what they calculate for prices and what shower heads they compare to. Their main website shows savings examples of anywhere from $89.05/year (Miami) to $399.68 (San Francisco) for two nine-minute showers per day. This is presumably comparing against a 2.5 GPM head, since their head uses 0.75 GPM and they claim a 70% reduction in water usage. Comparing to one of the many 1.5 GPM or 1.75 GPM heads will obviously lead to significantly less savings.
> Think of it like Tesla for shower heads
Big difference between Tesla and Nebia: Tesla was going after a market where the current participants didn't really care about pushing the state of the art; Nebia isn't. Kohler and Moen in particular have been developing and pushing low-usage plumbing fixtures for a while.
10 years ago: "New VC firm funds unsual startups in an unsual program, at an unsual equity."
I do not think there are two people who thought Dropbox, Reddit or Airbnb would be what they are today.
If you thought DB, ABNB and RDD would all be worth what they are worth today, then I must say you need to be investing for me and everyone else.
A lot of startups profess 'to make the world a better place'... this one easily delivers.