I agree it is expensive to gather but is it something that can be sold at high cost to 1000s of customers? It seems the market for purchasers of that data might be limited to a small number of companies, probably hoping to build ML models.
The question I responded to was what made it hard and/or expensive to obtain, which I think I answered.
Commercial viability of doing so for profit is a different issue, but I see that's the other part of your original comment. It's not an obvious answer, partially because there are a lot of different scenarios within that blanket "medical imaging", and what the putative customer might want to do with it.
Yes, I should have followed the thread better. My mind is focused on a particular kind of commercial viability which is niche markets (in the 1000s to 10,000s) willing to pay for access to data.
