At the start, I will apologize for my english. It's not something we can practice and speak often in my region, so I hope I will be understood.
I can understand the point of view of the OP Thread. But there are some mistakes that was made.
I spent years in building on my hifi system. Very quickly, I realized that the reviews you will find on the internet or in magazines are, at the best, contradictory, if it's not simply wrong, tainted, or filled with flaws and that I will need to make my own experiences.
I used the blindtest method (with volume control) very often and compared a lot of things in very different topics.
Before we start with the response, please visualise that, generally, in hifi companies, the price is above 6 times the price of the components. So, when you are using wood and speakers for 1000$, you will sell this speaker for 6'000 dollars. It's a very common way of building the prices now, some companies are even going far higher than that (Hello B&W 800 seires, how are you doing).
I will use the term "I discovered", down there. But it was all things that was very well known before I tested that. I just confirmed things that was already there. You could read scientifical articles made by the BBC over some of those themes. And many others was made (EPFL, Deutsches Rundfunk, ect...).
The quality of your music depends of key component and factors :
1) your speakers
2) your room and the placement of your speakers in that
3) the recording
4) everything else
I discovered that the amplifiers are generally overhyped and that you could put a nad or an accuphase in the front of a very good and uncritical speaker, then you will not be able to hear an improvement until you see the gear functionning. The only benefit of greater amps is the ability to deal with critical current demanding speakers. In some cases, some amplifiers are "sounded", so they are modifying the sound, it could be good, it could be bad, it depend how you are imagining the way you are listening hifi.
I discovered that the quality differences in cd players reproduction are tiny. Probably in a difference range of 2 or 3%. It will be difficult to hear or feel the improvements of a good player compared to a very good player. It's a simple technology, very well made, that will not give bad results when those things was build up correctly (very important, because it's not necessary the case).
I discovered that the quality differences in turntable bring real improvements, even if I think that invest too much in vinyl is crazy too, because of the imperfections that vinyls have.
I discovered that cables will not need to be expensive. Simple cables are doing the job until they are not critically small for some uses (speakers need more cross section than interconnect).
I discovered that some builders are making, on purpose, bad engeneered products for confirming their theories about some voodoo themes. So you will have some hifi amps that will be very sensitive to the impedance and resistance of the connected cables, because someone made a complete sh_tty cinch connection that will be oversensitive to that. Some are doing cd players or dac without error correctors for letting everybody belive that it's important to have very good cd transport in those. And they are numerous other problems like that. A really disgusting business with the ignorance of the peoples.
But, the most important is, the better your speaker and your room, the most amazing the result. To build a good speaker is not a cheap thing anymore. You saw the margins I mentionned at the start. Some speakers are quickly running over a budget of 1000$ for the chassis, and then you need a good crafted box, a good setup over all that what requires expercienced engeneers (costly), good materials... it's not cheap. And you will hear this "plus" of work. It's not one of those voodoo things ; just physics paired with hard on reality. So, in this point, the OP is wrong. Although, if you want to maximize this result, your room need to be calibrated. It's not cheap either. Just putting enough basstraps, enough absorbers in the critical frequencies and a little diffraction, and it will cost you the 2'000$ you mentionned.
I'm not saying you will need to do all that for enjoying music. But every person has other expectations when listening to music, and the perfectionnists music maniacs amongst us, will probably have to go this path.