There is simply not enough material, matter, to be able to build a Dyson sphere. I have had an idea which happens every single day - second, Planck time, in fact - which can be done to get enough material, though - and each Person, Animal, and Plant does it constantly!
It depends on what you mean by "advanced". A car is advanced compared with a horse and carriage. It's only hard to make if we don't know how to and/or don't have the means to make it.
The Gods and Goddesses use, for example, spaceships which they can control with their Minds.
This is a Spiritual war. By the time we managed to build powerful-enough Physical weaponry and cajiggers, other things would need to be done already, before that point in time. Recall World War 2 and the very powerful Nazi weapons and ships - it didn't have as big an impact as we wish it did. Now within the last 17 years or so, building up slowly but surely, with the Rituals, the world has seen massive changes and things have come to light which the jew has been doing for many centuries previously in secret.
There is 3-D printing now, and there is also a version of the Star Trek replicators in existence, or very close to existence, now.
https://ancient-forums.com/viewtopic.php?f=3&t=19351
Who has the money, though? By the time we have used Magick to manifest money and materials and manufacturing and labour into Physical existence, we could have done a lot more damage against the jew already. For example - you could curse a jew to be dead - and you can do that from the comfort of your own home; going out and buying a gun (in most countries where this is impossible) and murdering a jew is a lot harder, not to mention a lot more dangerous and "muh illegalz". The best option for now is to raise energies and put them into the Astral realm for them to manifest in the Physical realm - even if this was still "illegal", how would the jew know? If, perhaps, the greys tell the yehuborim "X Person is doing Magick!", then what could the jew do? Would it come breaking your door down and kidnapping you?! You must to your own protections, as well, of course.