Why Silicon Valley Funds Instagrams, Not Hyperloops

[Lamplighter]

Ummm..... what's wrong in the lead paragraph:

Stanford researchers have developed an inexpensive device that uses light
to split water into oxygen and clean-burning hydrogen.
The goal is to supplement solar cells with hydrogen-powered fuel cells
that can generate electricity when the sun isn't shining
or demand is high.

If the Stanford process works, why not just use it instead of solar cells
Is it because there is always a loss of energy in every process.

Somehow the "something from nothing" never seems to work out quite right.
That is, Lucy always yanks the football away.