Are audiophile products designed to initially impress then fatigue to make you upgrade?

If something is fatiguing, it is likely the room.

Not true look at very high end dacs like the chord Dave 

It’s  very detailed and cutting edge but very neutral ,which for instance if you have a Vacuum tube amplifier or preamp would be a ideal match , also with the hundreds of brand Audio cables ,even digital they all have a solid signature that you personally can Taylor to your specific Audio system ,it just takes time and monies to 

match, sometimes you have to sell something to get better synergy ,but that’s what Audiophiles do. Some Audio dealers allow a trial period . You control your $$ .

you absolutely should research every product and reviews,forum information you are considering to purchase.

 No, not if you bought the right components in the first place. By right, I mean don't buy overly analytical or bright equipment.

Why those little sneaks….😠

Planned obsolescence does exist in mass produced gear like Denon/Pioneer/Yamaha AVR gear.

I disagree with the premise that better quality manufacturers design goals are to lure you in, then some magic switch goes off to produce sound that is intentionally  fatiguing.

But it's a great idea that I'm sure the low-end sales guys would love.