Answer:
Ancient and majestic, great big piles of stones, Used to encase both riches and bones. Seen from certain angles, They look like big triangles.
It is something you will never see again.
What is it that no man ever saw, which never was, but always will be?
I make billions of dollars selling Windows. Who am I?
What comes in many varieties and can't be seen or touched, but it often makes you move?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?