I'm sure you can throw out statistics that prove otherwise, but I think the average living standard of Poland is already better than America. Again, anecdotally, but I'm American and I've lived in Poland for about a decade. Food, healthcare, housing, access to parks, public transport, etc. are all better quality here at the average-person level than most places the US.

Americans just end up paying for a lot of things that are either undesirable for many Poles (e.g., a huge McMansion in desolate suburbs and the car to drive there) or paid for via other means (e.g., healthcare.)