I just don't use so many of them.
I'm not an addict - lol. I won't admit I have a problem.
Thing is I only have about 30 razors at this point (many have come and gone) so I feel ok when I see collections of hundreds. Most of mine come from antique shops where if I see a decent razor at a good price I feel obligated to fix it up and give it life again, with myself or anyone else who will use it.
I would think next year if I retire I will sell most and keep 10 or so.
For 21 years using straights I've managed to keep it under control. Same with stones, had/tried near everything but managed to keep a decent few of each. Strops too although a few more Red Imps than others.