[inopinatus]

Yes, these things make an enormous difference to lives on a grand scale and advance overall human capability both for the capabilities they provide directly and the research they enable. Orbital platforms are essential for modern standards of safety, logistics, utilities, communications, even healthcare. Tunnels are essential for mass transit. The civilisational value of infrastructure is incalculable, because it’s not linear, it’s a step change.

Complaining about ads seems wildly off topic.

As for “what power grid”, that’s just another display of wilful ignorance.