We definitively can't blame foreigners, because they are doing nothing wrong other than using their money, the issue is that the government has enticed people to come because the country needs it, but they somewhat forgot (or dismissed) the economical impact on native portuguese.
That's terrible, and it's a huge question for the Portuguese government. But it's definitely not foreigners' fault.
We definitively can't blame foreigners, because they are doing nothing wrong other than using their money, the issue is that the government has enticed people to come because the country needs it, but they somewhat forgot (or dismissed) the economical impact on native portuguese.