Why are other industries allowed to just put a locker on the front door and call it a day? Decommissioning and waste processing of solar plants isn't included in the cost either. In most industries it is expected that the site is secured (which, in case of an NPP means removing the old fuel obviously) and then the next guy who wants to use the site pays for the destruction of the buildings (or in practice the taxpayers as subsidies to improve “competitiveness” of the region). But somehow not nuclear.
Industrial countries are filled with old industrial sites with massive amounts of remaining pollution (heavy metal in the soil, asbestos in the buildings), the industrials never paid for decommissioning.
In fact I think that the policy we apply to nuclear is the right one, and for effluents as well (unlike chemical plants that litters the neighborhood with PFAS, NPP reject practically nothing whatsoever), as it is the only sustainable model. But then again why the double standard? Why apply it only to nuclear?
The answer is unfortunately the irrational fear of nuclear that derives from the stigma of the cold war and the fear of the Bomb…