Supermarkets! It's the pattern.
Big supermarkets muscle in, initially offer cheap goods, good ranges etc. to force out the smaller competitors.
Then when they're established, the prices creap up, the ranges reduce and they end up full of imported or processed crap.
It's exactly what has happened in the UK over the 90s and 00s' and now the rest of Europe is seeing it.
When I started going on foreign holidays in the 80s, you bought your food from local/small shops, markets, stalls, etc. In the 00s', on our foreign holidays, we started to see the creep of smaller supermarkets, like Spar, etc. Now, there are loads of big supermarkets and you struggle to find local/small shops/stalls, etc.
It used to really "feel" different to UK when going to places like Spain or Italy in the 80s. Now you may as well be in the UK, with the only difference being the weather.