no one in this thread is calling the tracking in this innovative

I didn't say otherwise. But clearly Perplexity (and Google etc) feels there is a market fit for this, so I'm referring to those customers and whatever future customers might come. This is also nothing new. See: basically all existing social media and its consequences.

Additionally the government doesn't do anything for "free"

I reworded this since it wasn't the point, and had some assumptions made about usage.