Nothing is permanent. Once upon a time investors loved the Steel magnates and Railway tycoons. Today its these tech companies.

But by themselves they don't solve structural problems.

For example - On the Housing front, Tech has made construction and design more efficient, but housing costs keep skyrocketing due to demand vs supply, zoning laws, speculative investing etc

On the Medical front it has given us all kinds of advances but cost of healthcare in the U.S., keeps rising due to high admin costs, expensive pharma drugs, and private systems that maximize profit etc.

On the Edu front, everyone has free access to infinite info but costs to educate and certify anyone's skill and knowledge is keeps jumping.

So Tech is not causing any great structural changes. It doesn't live up to its hype.

The system is just rebalancing. By its self.