I have a problem understanding your argument.
You freely state:
1. PCIe4 is just marketing for desktop
2. €600 boards are the only way to have passive heatsinks on AM4 boards.
From which I conclude:
1. You must need PCIe4 for professional use.
2. You aren't willing to pay professional platform prices for professional platform features.
Mercedes don't sell the S-Class for €25k. Rationally people don't expect them to. You can buy a C-Class for a bit less of course, but your getting less.
I expect innovation with honest marketing-from AMD (sadly to say not from Intel, they are lying whenever they are hidden by nice speech)
PCI-e 4 was marketed as new desktop innovation not (only) professional. If you ask people here if they expected pcie 4 as something special for 300+ eur boards, you will get negative answers. All what was discussed was that AMD is going ahead with pcie4, not that is going ahead withn expensive board, chipset fan and overquality VRMs. (btw that sound to me fishy really waiting for the reviews)
Desktop. Not WS, not server.
I dont expect desktop prices for professional use (as for the car example, I have MB gls 63amg and bmw 540i xdrive and I never expected to buy them for 25k or so, and they didnt promote it that way).
on this forum, AMD is I dont know why promoted as righteous knight
I expect innovation
I have a i5-6600k undervolted oced to 4.4GHz which while stress testing consumes 41-47W, 4C4T with 32GB 3000 CL16 RAM and samsungs 850pro SSDs- bought january 2016 or so
that system is quiet while idle, quiet while full load, has quick short burst power
to get that quiet system while being 10% or more powerful with 4T shouldnt be a problem in 2019- but it is, Intel failed in that one and I am dissapointed that platform wise I will probably buy the same as my asrock z170pro4- pci-e 3 with x470 because of that fan....