If one could safely sterilize the ground I think one could use it repeatedly. The issue is how to sterilise, chemicals would not be good and there are no amateur systems I'm aware of.
Many years ago I worked at a cut flower nursery one summer.
They grew the same chrysanthamums (?) in the ground from seedling to cutting height, repeatedly throughout the year.
After taking each crop the long four foot beds were covered in heavy duty black plastic, held down along the edges, one end left unsealed while the othe was put over a frame and sealed around the steam hose from the ex-navy boiler. The bed was then steamed overnight (may have been longer) then allowed to cool to a safe temperature and dismantled, forked over with a sprinkle of fertiliser and replanted.
This was done by the manager and two of the full time chaps, we student types were kept clear as scalds are unpleasant.
Not sure if a domestic equivalent could be engineered from a wallpaper stripper, they only seem to have an hours worth of water supply.