There is no doubt that there are comparable wines to these. As you no realize, wines are limited quantity products. Josmayer for one has released several vintages of this riesling since the '97 which are readily available.
There will always be wines that you love and will never forget. MOre and more as years go by. FInd one of the next ones.
If you put "Domaine de la Fountainerie" into any search engine you will get no hits (proving it to be an unusual if not to say obscure commodity even if discussed here).
I would suggest drinking something else. If that won't do, go back to where you had the wines before; ask where they got them.