Craig Newmark (Craigslist) and Jimmy Wales (Wikipedia) come to mind, both founders could have made platfoms that would have been ad-ridden (and made a boat full of cash) but the founders chose not to

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fakedang 6 hours ago | parent [-]

Uhh, Craigslist is literally an ad platform. They just didn't want anything to do with a middleman.

	▲	dylan604 6 hours ago \| parent [-]
		I think we can all agree the "ads" on CL are not even close to the same ballpark as the offerings of ad tech. Like to conflate the two as the same would be the most disingenuous bit of logic that I'd be embarrassed if I were the one to have made it.