Inactive inventory ( for no discernible reason)?

I’ve just been looking at my " inactive " inventory.

I have

• " Inactive ( Out Of Stock ) " - Against things I have sold, with " 0 Available ", so that is correct.
• " Inactive - Potential high pricing error " OK, whatevvahhh.

BUT

I have items which show simply

• " Inactive "

Puzzling:

• These DO have an Available quantity of stock
• Absolutely no chance of " pricing error ", some of the prices are negligible.
• Absolutely no chance of being controversial, gated, banned, mask or political correctness linked or picked up by bots.
• Existing products active with other sellers and their offerings. A couple have as many as 30 to 60 sellers.

Examples are:
Couple of popular family films
A popular Andrea Bocelli CD at around the £5 mark with dozens of other sellers.

Bit of a mystery

I have checked a few other threads, but found no answers …

Any ideas ?