I'm sorry, but this argument is simply absurd. Are you honestly suggesting that a PS4 can be as easily repaired as gaming hardware from the 80s? A lot of things have happened since then, not only technological advances but the advent of proprietary ICs that you can't really pull off the shelf. The Saturn (for which the previous port of this game was released) was released nearly 22 years ago, and gaming preservationists still only barely understand the system, let alone are able to repair all but the most trivial mechanical failures. The most you are really able to do on your own with a modern console is redo the thermal interface, which isn't a catch-all solution to all that can go wrong.
Were Sony to go bankrupt tomorrow we would have working PS4s for the next 10-12 years tops before we start running out of units in public circulation to cannibalize. Sure, there will probably be units well maintained enough to keep working then, but those will be in the hands of private collectors and the prices they will start to command will make it quite infeasible for those to be changing hands.
To relate this all back to the original point: modern gaming consoles just don't last all that long, and their life expectancy puts a cap on how long a physical game release stays useful. This wasn't always the case, but it's a factor that became significant at about the same time it became possible to download full retail games instead of purchasing them physically.
Since you seem to want me to state common sense explicitly, then yes, lack of ability to trade content is a known downside. But in the other case,
Sony explicitly states that they will grant refunds if "the content is faulty". And considering the patch-as-you-go nature of games these days, any refund-worthy technical fault will be gone in a matter of weeks anyway.
I wouldn't be spending so many words on this argument if I didn't feel you are gating yourself away from experiences you might really enjoy over what is, in the end, not very much money at all. The asking price of this game - the digital release, not the physical bonus package - is about the equivalent to what I end up spending daily on food. There's also the point that I have a motivated self-interest to try to get as many people as possible to buy the game early to help ensure that M2 keeps this line of STGs coming, but that's secondary.
I never said I don't empathize with people who want to resell their things. My point was merely that I don't think it's a healthy habit, on an individual level or for the industry at large, for buyers to consider resale value as a factor in their initial purchase decisions. I also feel that a purchase price of roughly $40 is not quite to the point that you should have pre-emptive buyer's remorse over something.
Battle Garegga, in particular, is a game the market has placed a huge premium on; the going rate for the Saturn version in fair condition is a whopping $260. I think it's a good thing that this release will serve as a much lowered barrier to entry, and I certainly hope prices like these will soon be a thing of the past. If the elimination of the used game market is the price that has to be paid for prices to be lower for everyone, then I'm personally all for it. (This, of course, necessarily assumes that Sony will be around to guarantee the price for a long time. But all that can be done to make sure that happens is to keep supporting them.)
To be frank, many of the arguments I've seen in this thread strike me as not particularly well thought out. I don't say that to be insulting or adversarial, but if the arguments themselves don't hold up to scrutiny, then I don't think they are going to persuade anyone. I'd rather that be taken as a prompt to produce more well-thought out rationales for your thinking rather than resorting to personal attacks to provide self-validation.