Maybe. I would not underestimate people finding resources or not doing research. Many don't have the luxury of making a mistake. If it were so straightforward and simple, we'd see more of it, at least in the States, and we'd read about it here. I don't think the primary reason is laziness or ignorance. I agree that better distribution and marketing have an impact. I don't see marketing and distribution for vintage. It may be different in Euro/UK. There is a vintage forum here, but are there threads or posts for professional services, parts or dealers?
As I said, I'm not making an argument against, but accounting for why there may be reluctance to go down that path.
Day speaks encouragingly about vintage (he owns.) I don't mean to swerve this thread.
Most of the vintage stuff worth owning (not all of course but a hell of a lot of it) comes form the US! It is like Japan, in particular, single handedly kept the memory alive while the US sufferred largely from a sort of audio amnesia. We had forgotten how good the stuff was that we made (at least the consumer sector forgot).
The speakers of interest: Western Electric and their spawn (JBL, Altec etc.), while perhaps not all that room friendly (especially the old WEs) can still be found in the US with a bit of digging. You don't read about it because magazines are focused on the new...it's how they sell magazines.
Go seek out either an original pair of JBL Hartsfields (with tweeter...the two-way version sounds a bit too rolled off) or the nice reproductions that are available. Set them up correctly and prepare to be stunned.
Where I think modern has handily surpassed true vintage is in eletronics...not from the design perspective as the old tube designs were quite good, but from the materials that allow greater transparency adn tonal correctness.
The reluctance, I think is due to the mentality in consumerist societies to dismiss the old for the new. In some cases, like most automobiles, there can be no doubt about the performance now vs 50/60 years ago. For many other things, it is not so clear cut. Music and music playback being two notable examples (or most things related to aesthetics rather than raw objective performance). People were sold on throwing away that old stereo for the newer shinier and of course better sounding one...just like their dishwasher, car, golf clubs etc. on the assumption that better technical performance was always better for the consumer. Just one problem...a golf club that allows you to hit 30 yards longer everytime (and straighter too) is a no brainer up grade but is going from an amp 1% THD that is all low order harmonics to an amp with 0.1% THD and a picket fence of high order harmonics better? Objectively yes, subjectively not bloody likely.
The west was on the vanguard and then got seduced by smaller, more convenient and cheaper. The Japanese, for whom convenience and size were not the main drivers, bought up the big systems from the US in droves (that is why you can go on Hifi Do and other Japanese audio seller sites and find JBLs, Altecs, Tannoy etc. to your hearts content) because they saw the value as music making devices...not as commodities.
We are now, to some small degree, rediscovering our heritage, thus the flurry of interest in horns and yes tubes. But what is not widely appreciated is that the best vintage horns can easily hold their own (and then some) with the best modern horns or speakers of any kind for that matter.
History is not as kind to vintage amps, where I think also age takes a greater toll on electronic parts. STill the designs persist...