I can't speak to the comment as to why manufactures and/or vendors take advantage. I have no visibility that they are, or are not, to be honest. I do not mean my reply to sound confrontational. I think a lot of points have already been made about inflation, total hobby size, competition, social media influence, marketing, and more. I don't think I can add anything to that.
I do find some aspects of the hobby strange in that we complain about the price yet willing to subscribe, become a member, or a patreon for badges or gated content/access. Social media, games, etc. We can more or less let them know by our reefing budget allocation. Maybe they will catch the hint, or not. Again I'm not sure.
Hope your day is well.