Uh, no.
Apple, Microsoft, Cisco, Oracle, Intel, Qualcomm, Netflix, Amazon, IBM, Texas Instruments, nVidia, Tesla, SpaceX, Uber, Airbnb, PayPal, Priceline, Broadcom, HP, Dell, VMWare, Symantec, Intuit, Adobe, Salesforce, Tencent, Didi, SAP, Amadeus, Workday, Micron, HP, Foxconn, Huawei, Samsung, Sony, Panasonic, Taiwan Semiconductor, Hitachi. And on and on the list goes.
VS: Google, Facebook, Alibaba, Baidu, Twitter, Snapchat.
Companies like Oracle and Salesforce I would bet derive a significant chunk of revenue selling advertising and marketing analytics services as well.
Regardless of pedantry olad cratering would be a huge huge huge fucking deal for many people who work in software (at least).
Otoh ad companies will just become even more scummy. I am not sure how that is even possible, but there is probably a start-up trying to figure out how
If the bottom drops out of advertising we will have mass death of tech companies
We will also have a massive VC funding freeze as they aren't going to want to fund companies that don't have a non advertising framework for revenue and neither I nor anyone I think really understands how to fund most b2c tech companies outside of advertising (yes there are some solutions but they are so much less effective than advertising)
So yeah I find this pretty terrifying. It will probably be way worse than the 2001 bubble because the amount of the economy that depends on tech advertising now is much much greater than the amount of money invested in tech in 2001