I have been to Wrocław's large Sunday market quite a few times. Some of the new clothes stalls are manned by people who from their accent and appearance seem to be non-Polish natives, namely Romani, Indian and Asian.
I can't help but admire that they already have a pretty good command of the Polish language! Some have only been in Poland two years. I wish I could speak Polish even a quarter as well as they do! Also got to admire that they arrived in Poland with very limited resources (or none) and have managed to acquire sufficient knowledge to obtain stock to sell, deal with the Polish market organisers, and then start selling there week in and week out (or they're always there when I visit, anyway).
I guess the same can be said for those who moved to the UK throughout history and had to become self-employed or market traders because they found getting paid normal employment to be less than straightforward. But somehow I admire it more here, perhaps because Polish and the system in Poland is so much more complex and less foreigner-friendly than Britain's.
Your account just proves that assimilation is far more important than multiculturalism. Even the leaders in the UK, Germany and France have acknowledged this.
There is no incentive to learn the local language and integrate in the wider society if the state provides or makes other taxpayer funded accommodations for most if not all of your daily needs.
