Poland has been sucking at the EU tit ever since it's joined - and Polish infrastructure has been much improved as a result. However, two game changes have been going on.Has the UK started something? EU crisis: Polish MEPs spark Brussels panic after standing ovation for 'POLEXIT' demands
The first is that the EU is trying to substantially interfere in Poland (and Hungary's) internal affairs.
The second is that the allocation of EU structural funding is changing. Until recently, much of the funding was spent in Eastern Europe - the poorest areas of the EU. Now a lot of that funding is being stealthily switched to Club Med. There are not the poorest countries in the EU, but they are the ones at most of risk of financial collapse in the next recession - and hence the most capable of bringing down the euro. Add into the mix the withdrawal of UK contributions at the end of 2020 and Poland is going to receive far lessMEPs called on EU countries on Wednesday (15 January) to set concrete demands and deadlines for Hungary and Poland, which have been under prolonged EU scrutiny over the rule of law and judicial independence.
These two factors are likely to continue to fuel anti-EU feeling in the EU. As might a relatively painless Brexit - showing you can leave the EU without being punished for it.
I don't think Poland is in eminent danger of leaving the EU - but the pressure for it will slowly build in the coming years.