I also wonder, how many of those guys who buy the super nice TT bikes choose to specialize in TTs?
I have a super sweet track bike and set up. It's quite high end. But I focus all my time and energy on track racing. (Also, I chose the frame I did because my fitter said it is what I needed for optimal performance. I'd have gone cheaper if there were a better option.)
My road bike is now 10-11 years old. My gravel and mountain bikes are newer - last 3-4 years - but are all spec'd at the lower end because I ride them for fun and variety.