The other issue you run into is cost of getting to competing offers. In your example, you can just ask a dealer for a quote and they'll give it to you, with little to no work on your part. In tech, you have to go through multiple hours of interviews to get this information.
It's no wonder that people are resistant to go interview. Especially when you can get most of this information much more easily through levels.fyi.
Also it's not just a matter of getting several offers in a two week period. That's somewhat doable if you are unemployed. If you're trying to interview without your current employer freaking out, you have to space these things out. You can only have so many 'appointments' in a two week period.
I follow your logic but I am not sure it really works.
Agree levels.fyi is a great resource under the right conditions. EG, if Facebook wants to interview you as an E5 engineer, it's great to look up the range for that.
But if you are say a "senior developer" working outside of FAANG, what does it mean for you to know the E5 comp when you have no idea how that lines up against your profile? How would you know if FB would consider you for an E5 or even an E3 unless you interview and see how close you can get? The only other way is if you're already in a FAANG with very comparable levels. Otherwise, what's a "senior engineer" in one place may not pass the resume screen for a "junior" in another.
I agree with you that it obviously takes multiple hours to go through an interview, I am calling out that it's often well worth it, because: you may actually get an offer at the end, which you may take or use to negotiate with another company, and even if you constantly fail interviews there's a very actionable signal in that too. So the return on investment for those hours - ultimately being able to get a better/more lucrative job, seems like a good use of time.
The other issue you run into is cost of getting to competing offers. In your example, you can just ask a dealer for a quote and they'll give it to you, with little to no work on your part. In tech, you have to go through multiple hours of interviews to get this information.
It's no wonder that people are resistant to go interview. Especially when you can get most of this information much more easily through levels.fyi.