Why would they not have had solar indexed stimulus? To me it seems much more likely they did. If there was no profit, as am sure you are right, there probably wasn't, there must have been some other mechanism to transport energy from whichever source they were getting it from. Why would it not have been solar indexed stimulus?

Even the method proposed by Nikola Tesla, to issue money for free corresponding to energy for free, was essentially solar indexed stimulus, because the source energy was intended to come from what Tesla believed was a dielectric layer in the atmosphere which trapped energy from the sun, for a time, charging up, until it breaks down as lightning. Tesla's intention was to capture that charge with spikes (Antennas) from ground attracting the charge, so as to take it before it becomes lightning. As lightning it doesn't do much good, there is no known benefit of lightning, it has to become heat during breakdown.

For sure they had technologies we don't have as yet, the energy needed just to build the great pyramid in 100 years or less, if we believe official accounts of how long it took is astounding, we couldn't do it now. We couldn't even have done it during peak energy. Its said that the tips of the pyramids were covered in gold. Sounds like Tesla antennas to me.

Tesla stressed money had to go for free when energy went for free, but the banks didn't listen and cancelled him, I guess for implying maybe they were being a little dishonest and greedy, for wanting to charge for energy that comes for free. But look, it was physically unsustainable all along, and now they are going bankrupt, because despite them not monetising it, solar is the only energy use scaling up, whilst all the others scale down. So now money has to come to represent nothing. No energy value in money means no value, as energy has to quantify what can be done with money.

I don't think we could offer anything to the ancient Egyptians, they appear to have been more technologically advanced than we were.

Unless maybe they didn't have a solar Ai, in which case we could offer that, or at least offer its existence (We can't own it). Mind you, it could well take a few thousand years to deliver it, if we were to promise that, and it would cost them, umm maybe the genocide of their existing civilisation.... hmmm, hang on a minute...