I disagree. There are several great FIAT betting exchanges like Smarkets, Matchbook, Betdaq etc. However, you are right about the part about crypto betting exchanges.
A lot of European countries used to have access to the other betting exchanges you've mentioned.
That is not the case anymore.
They seem to be exclusive now only to the UK & Ireland.
Plus, stories that they also banned winners just highlight the fact that they seed their own exchanges (instead of the regular punters)