You make some good points! If Gillettcetera get back in this aspect of the game, they'll jack the prices way up at the very least.Perhaps the question should be: Does wet-shaving even need to grow to support the "golden era" of supplies that we are now experiencing?
With each of us buying enough to stock a small village, I think the answer is no!
I also believe that the perceived "growth" in supply is actually very little and largely illusory.
The list you displayed re 2006 was largely made up of companies that had been around for a century or more, and they weren't the only ones available then. All major producers of shaving supplies to-day were around long before 2006, and while that kit was a bit pricey, cheaper alternatives were readily available in 2006.
Synthetic brushes have been around since the 1950's, perhaps earlier.
D.E. blades and shavers never went out of style in the East, Slavic, or third-world countries. It's just that they're recently being more actively imported to the West.
Straights never disappeared from France, Germany, or the Far East (especially Japan), and are now even making a come-back in those markets.
What has changed in that time, has been the explosive growth in world-wide on-line shopping and specialist stockists that have brought the world's existing supplies to our door-steps.
The "growth" that I do concede is that of the small entrepreneurs and businesses, that have exploited the "niche" market that we fanatics have created. Their production numbers are low because our numbers are low, and thus their impact in the wider world of shaving products is minimal.
If traditional wet shaving really was growing in the western world, you would see the major producers re-introducing traditional shaving products for our markets. Brands such as Palmolive, Williams, Barbasol, Gillette, Colgate, Wilkinson...all of whom used to make traditional soaps, creams, brushes, D.E. blades and such...in the West, and are still in business, but making canned foam/gel and carts here, if at all.
Yet, I still think each of us has a humanitarian duty to pass on what we've learned (without fanaticism), when appropriate... relieve needless suffering and all.