Except that model train manufacturers can raise production to maintain a price equilibrium (and have an incentive to do so, namely the profit they make from producing trains). Nobody can manufacture any more bitcoins than the algorithm allows.

Now if you convince me to get into collectible model trains, say pre-war Lionel models, the supply of which is fixed, that will raise the after-market value of your pre-war Lionel models. Whether or not that increase is significant depends on a lot of things of course.