Maciej Zalewski (a co-creator of Kaczyński's first party - Porozumienie Centrum) remains the only high-level politician I know of in Poland that was sentenced for corruption and actually went to jail.
He warned Bagsik and co. (who stole millions of public money through the famous Art-B company and escaped to Israel) that the police wants to imprison them - so they managed to escape. Bagsik later confirmed that they shared some of that money with Porozumienie Centrum's business named Telegraf. Somehow only the less important guy (Zalewski) went to jail, but Kaczyński brothers weren't prosecuted.
There is corruption everywhere (though obviously not uniformly distributed). It requires active, dynamic efforts to counteract. If you don't see some evidence of successful prosecution, that itself is informative.
I think the 500k was a reference to the fine the third-party service company (SPS Mieczkowski) had to pay due to the failure that it now turns out was intentionally caused by Newag.
https://pl.wikipedia.org/wiki/Maciej_Zalewski_(filolog)
He warned Bagsik and co. (who stole millions of public money through the famous Art-B company and escaped to Israel) that the police wants to imprison them - so they managed to escape. Bagsik later confirmed that they shared some of that money with Porozumienie Centrum's business named Telegraf. Somehow only the less important guy (Zalewski) went to jail, but Kaczyński brothers weren't prosecuted.
But there's a lot of low level corruption that is exposed, it's just usually ignored by country-wide media, because that corruption is local. For one example: https://samorzad.pap.pl/kategoria/prawo/prawomocny-wyrok-byl...