Look at 4K TV sets, for example.
Just about any luxury of the rich that can be produced more efficiently over time makes its way to the average consumer.
People who are installing $40,000+ roofs on 2000+ sqft homes are not rich by your standards? Or do you truly believe these panels will "print money"?
This is a magnificently out of touch comment.
You think the difference between an asphalt shingle roof vs a 100-year slate tile roof is a "small factor"?
Production of early versions is always more expensive because of the research & development, creation/configuration of the machines, etc, etc but the marginal cost goes down drastically. The numbers work out even better as you can amortize those early costs over a larger and larger production run. This means v2 and later editions are cheaper.
It's text book "economies of scale"
For example, look at prices of flights. Before there was no "first class" everything was first class, now there are cabin options.
While that example is a service, more proliferation of service == wider adaption == increased scale of economies == eventually prices come down for everyone.
This is not true. Trickle down economics is the theory that money given to rich people will enrich poor people because the rich people will use the money to buy goods and services the production of which will require the labor of poor people. That is, this extra money at the disposal of rich people will create an economic domino effect such that money will ultimately end up at the disposal of poor people. In a trivial sense this is true. The theory is only interesting if this is an efficient way to increase economic activity generally without deleterious side effects.
But it never was the theory that giving money to rich people would spur research and development such that services ultimately were cheaper.
As to whether it's a scam, that is another matter. The allegation then is that the boosters of trickle down economics do not believe their own claims as to the efficiency of this process. That is, they believe, because it is tautologically true, that this will enrich those who are already rich, and they desire this, and the story about the efficiency of this process is a tall tale to salve consciences or win over rubes.
"[I]f the income share of the top 20 percent (the rich) increases, then GDP growth actually declines over the medium term, suggesting that the benefits do not trickle down. In contrast, an increase in the income share of the bottom 20 percent (the poor) is associated with higher GDP growth. [1]"
[1] https://www.imf.org/en/Publications/Staff-Discussion-Notes/I...
Your analogy is more appropriate for space tourism.
This presumes rich people never have good motives and any appearance of morality or civic-mindedness they might show is a self-aggrandizing sham. This seems unlikely.
Ah yes, trickle down never fails.
Is this based off an SV mindset? There are plenty of homeowners that aren't rich around the country.
Plus less pollution in the air helps the masses too, with fewer health issues and less extreme weather on a long term basis.
But for the working class/lower middle saving up 10k pounds for a deposit is real work.
64% of Americans own the home they live in.
https://en.m.wikipedia.org/wiki/Home-ownership_in_the_United...
When computers were new, only rich organizations like governments, banks, and large corporations could afford them. Now you can buy a raspberry pi for close to nothing.
Adopt the existing, proven and cost-effective implementation of PV (~3’ x ~5’ aluminum framed panels).
Waiting on Elon to figure out boutique solar so the affluent can all install it first and drive mass adoption (decade?) stalls PV development as much as the US tariff on Chinese-made solar!