No need to repeat so many good points. The best and most troubling are: 1) Sellers will look online and see ridiculous prices and go from there; 2) The "hobby" will cease being a hobby as we know it, due to prices for good stuff.
However, consider this: Although in the 1980's I bought "top dollar" M1 carbines for $300, 1903 and 1903A3 Springfields for less than $200, any M1 Garand for $550, 1930's matching K98k for $350, etc. etc. However, there was no internet and no collector books until the late 1980's (Canfield's Garand and Carnbine book). All I was able to do was rely on opinions of older collectors, look at gun shows, pawn shops, and classified ads. I still was basically clueless and limited to a small geographic area (it was hard for me to find any German Mausers back then). If I had the information and knowledge that is available today, and the internet for buying, I would have had a whole bunch of different and better stuff, probably. The internet greatly increases the stuff available for purchase, and the books of today (and websites) provide much greater knowledge.
So, perhaps 20-30 years from now, people may look back and say the best time to collect was during the years 2000-2020--the era of vast data and superior reference material for collecting guns and the ability to look at many guns all over the country and legally buy them and have them shipped to you.
Just a thought.
Jack