Big Tech is term for big tech companies. Meta, Alphabet, MS, Apple and few more, the companies that have monopolized large sections of the Internet/Mobile and tech in general and are using that power + money to expand further into related/unrelated areas.
Too big to fail, but also not big enough to be broken up. If the government's priority was safeguarding the financial system, as soon as the crisis passed the big banks would be broken up to reduce risk if any one of them failed.
That breaking them up wasn't even discussed in government or media shows how powerful their influence is.
Everything is tech now. And other things are the value add.
For example, if you are a law firm, or a real estate company, and if your tech is not operating then your company is not operating.
If your Internet is offline, or your local network, then your business is not running.
If your company has a security breach, then you will have massive reputation problems.
If you're a small business, you need to have an online presence with Insta, Facebook, and Google maps.
It's all 75% tech now. Get with the programme.