It wasn't a hobbyist balloon to my knowledge. It was an expensive professional one. Unless the hobbyist was a millionaire it was likely launched by a University or their national weather service and they'd likely counted on recovering and re-using it but it was blown off course, this happens to US research balloons too from time to time so they're buying new ones semi-regularly.. They did later shoot down a hobbyist balloon sent up by an American group but that was a later incident.