This is not a question of obeying Germany's diktats. That's both a distortion and a gross over-simplification but I don't have the patience to explain why. However, the stability of the Union derives from the ability of the member states to take care of their own individual interests whilst at the same time avoiding outright conflict and confrontation in the process of doing so. It's about discussion, compromise, building relationships, diplomacy and persuasion.
As to business being lost etc, firstly no existing multi-national company is going to pull out of Poland overnight. No large company who had planned an investment in Poland due to take place in the next year or two will pull out either unless they are prepared to sustain large losses because preparing the ground for such an investment costs a lot of money. However, the present Polish government sends a clear message that they make up the rules as they go along and change them at their whim and also that an investor who comes to Poland on the basis that it's a member of the EU, may well find a couple of years down the road that's no longer the case. Now that is in itself is an over-simplification and only scratches the surface but it gives you an idea.
All of this trouble started with Hungary, the EU Commission let that slide and that emboldened Poland. The difference is that Hungary is clever enough to stay just within the bounds of what's acceptable and thus avoid Article 7. That's because Orban has no great political passion, except to be in power but PIS are zealots, evangelicals, men with a mission led by a maniac. They've now lost the plot totally and I can't see a way back for them at present. They're simply unable to talk or negotiate so they're lost.
As far Ireland's interests go, it's just as I said. It's against all of our interests as EU members - and that includes the nation of Poland - to have an EU filled with divisions, open conflict and in-fighting.
In my opinion the Palace of culture should be turned into a place of memory
I'm afraid Dolno that would only perpetuate a lot of ill-feeling and the place would possibly become a rallying point for extremists.