[TeMPOraL]

Competition. If you don't do it, you'll get outcompeted by those who do. It's not true in many areas (where the market isn't oversaturated), but that's the perception - so people go and blatantly lie even if they don't have to.

It's a kind of problem that should be solved by social norms and regulations. They are way too lenient right now, and the continued acceptance of advertising as a respectable occupation perplexes me.