I think that people are taking the word investment and running with it. I don’t think that (most) people expect a return above what they paid on musical instruments unless they are resellers who start with the objective to flip for profit.
Most people expect a fraction of that initial money spent on return, however buying something and being able to resell it at a reasonable price is objectively more common of an occurrence than the people feeling good about passing along their gear at a low cost so that someone else can enjoy it. You only need to look at Reverb or Ebay or even Craigslist, places where many people even here have probably sold things, to confirm that.
It is an investment in yourself and any money you spend is in that regard an investment, however people are getting hung up on semantics and being pedantic.
Take the topic and run with it if that’s the angle you want to take but the original sentiment was perceived and stated by several people: that it’s an absurd value in what you get for the price and the secondary observation is that these boxes are not holding up well on the resale market.
To idealistically deny the existence of a resale market because you want to make a point regarding the ethical and artistic choices we make as creatives is walking blinkered without observing the reality which exists on either side of you.
One does not have to participate in something to acknowledge it’s existence and while I’m not much of a buyer or a seller, even I observe that if something can be sold private party or traded to a store like guitar center, then it has a monetary value. That’s what we’re talking about. Not forecasting futures.
If people expect digitakt or any other modern, overproduced instrument to appreciate in value, that’s not living in reality and you’d be better off discerning a way to use it as part of your setup, which is how I’ve been approaching this because even when not used as a sampler, digitakt is a fine hardware compressor and effects box.
I’m personally left with a situation where my 2 digitakt setup is no longer a centerpiece for my music making so I have 1 digitakt too many, however me feeling that $300 is too low of a return on a hardware purchase is not the same as thinking I’ll make a profit on what I spent. It’s also not an ideological denial of the fact that a secondhand resale market exists, from which many of us purchase gear. It’s just interacting with reality, reasons for the low resale value aside.
At a certain point however, I may have to change my feelings regarding the merit of that $300 and that is also simply living in reality.