Sooo what you're saying is, that there is a substantially high demand for this parking, given how much people are paying for it.

That's not a warranted conclusion whatsoever.

The building is owned by the luxury warehouse NK that's located next door. Several floors have in fact just recently been converted from parking space to other more productive uses. A complicating factor is that the building holds cultural heritage status, so NK are not allowed to completely replace it even if they so desired. I'd be willing to bet money that there are very, very few cars that park in the garage, and that NK would be more than happy to re-develop the property should they actually be allowed to do so.

You know how you actually fix this? Get people to stop needing it. Then it will be demolished because there will be no profit in it. Don't destroy the solution without changing the need.

Again, none of these conclusions actually follow from the facts. Luxury warehouse parking is not a solution for anything when there's such incredibly high quality transit directly adjacent to the warehouse. The vast majority of the warehouse's visitors are already sane enough to take transit, or even walk, to get there.

There was recently a push to make an ultra-low emissions zone in central Stockholm, which would include the entrance to this parking garage. It's currently a matter of dispute - the left wing municipal government is pushing to implement it, and the national right wing government is continuously sabotaging the implementation. There's only so much sabotage they can continue to do, however, and there's good reason to believe that the ULEZ will soon be implemented, which will make even fewer cars come in to park in the garage, since they will be banned from driving to the entrance.