I think more people can afford these artisan pipes they just choose not to buy them.
Absolutely! I could afford to buy ultra high end pipes, but I don't have any desire to spend that kind of money. I'm not going to get 100 times the smoking pleasure for paying 100 times the price of a mid range pipe, or even 10 times the pleasure for spending 10 times the cost of a midrange pipe. If I want to piss away money, there are a lot more interesting ways for me to do that, like a high quality camera lens.
Besides, the hardware represents only 25% of the deal. The other 75% is technique, ie: prep, packing, cadence. If you don't know how to make the most of your tobacco, a $5000 pipe isn't going to make any difference. Even a $100 pipe isn't going to make any difference.
Instead of spending $2,000 on 4 high quality artisan pipes they spend $2,000 on 15-20 factory pipes. I know I did it starting out. I really wish someone would have told me when I started to save up more and buy better quality pipes less often instead of buying cheaper mediocre factory pipes more often.
There seems to be an implied suggestion that factory made pipes are inherently inferior to artisan made pipes. If so, that's baloney, like the claim that machine made pipes are inherently inferior to hand made pipes. Many of the best pipes ever made, were made in factories, and machines are involved everywhere in the making of pipes, including "hand made" pipes. The idea that you must spend at least $400 for a good pipe has been disproven many, many times. Pick up one of Trever Talbert's LIgne Bretagne pipes for a great pipe at a modest price.
You can get the occasional stinker at any price point. Paying more than entry level gives you more quality in terms of fit and finish, a hand made stem and bit, etc, and that may add to your smoking pleasure. I know it does mine. And I have occasionally sprung for an exceptionally interesting pipe. But none of this is going to help if you don't know how to prep, pack, and sip. And, if doesn't require a huge investment to get a basically functional pipe.
Am I suggesting that there is no reason to spend a lot of money on a pipe? No, not at all. The reasons for purchasing a pipe are many and varied. I'm a sucker for historical or vintage. But from the standpoint of basic functionality, a good pipe can be had for a modest sum.
As for artisans selling pipes of "lesser" quality than their signature original lines, that's just being smart. Instead of investing in dead stock, they're repurposing it and making money from it. The great British makers did the same. They didn't waste wood. They downstreamed it. That's all revenue and that keeps the lights on and people employed.