Even though extremely rare, I agree with you on this.
And how many people are looking for these parts again, You ? There is only a handful of people that want them and with the initial buy in, not soon after it starts, its over.
But I appreciate capitalism so go for it. Maybe see what other people are not making and I don't know be different for once and make those items. If its a hobby and you enjoy it do it, if your trying to support your living to get off the welfare system then I think it won't work, just my 3 cents.