Earlier quoted context omitted.
from the article: “The fact that Google and Facebook were able to generate such enormous profits and growth does give hope to some companies,” IF the bubble bursts, companies that seemed profitable might not remain so. companies like Facebook have made a fortune in advertising on things such as mobile (80% of its revenue), which to my knowledge really doesn't work. likewise a lot of desktop adds don't work, but many…
I am curious, why do you believe that ads do not work? Why would large entities continue spending on them otherwise? I ask because I operate a few businesses that have ROI > 1 on FB ads. I assume larger corporations, especially those like Amazon, Newegg, Fashion Nova, etc would be profiting off of them too.
What did the add companies have to say about mobile? most of the time, if something gets clicked, its because they were intoxicated and accidentally did so.