The talent follows the money. Consider what was hottest during the 2000s-2010s tech boom, startups offering free services with the value proposition of eventual data collection for ads.
Maybe also look at value instead of revenue, in terms of public market caps or private acquisitions. At least Facebook's $1.48T market cap is derived from ads.
Maybe also look at value instead of revenue, in terms of public market caps or private acquisitions. At least Facebook's $1.48T market cap is derived from ads.