I did a search about this;
Yes, independent "card casinos" (such as the Concord Card Casino chain) have been closed down in Austria.
The situation occurred as part of a government crackdown on poker venues that were not part of the state-licensed casino monopoly. Here are the key details regarding why this happened:
Consolidation of the Monopoly: Under the Austrian Gambling Act, poker is legally classified as a "game of chance". Because the federal government reserves the right to control all games of chance, these activities are now restricted exclusively to venues that hold a federal casino license, which are operated by Casinos Austria AG.
The Closure of Private Venues: Independent poker clubs, most notably the Concord Card Casino group, operated for years in a legal gray area. Austrian authorities began executing the Gambling Act more strictly in early 2020, leading to raids and the subsequent closure of all branches of the Concord Group.
Current Status: Today, live poker is only legal in the 12 venues operated by Casinos Austria, such as those in Vienna, Baden, Salzburg, and Innsbruck. These locations offer cash games, tournaments, and various poker variants in a regulated environment.
In essence, while you can still play poker in land-based settings in Austria, you can now only do so at state-authorized casinos.