If Warsaw is unhappy about those controles,
Which plays in to PiS hand politically, Germany's closest allies (KO, are politically against expansion of the police state and it's influence on the public)
PiS is the main party to propose strengthening border controls and the role of the Polish state, which will come at odds with German businesses!
A German government aiming at working for the safety and security of it's own citizens with a unpopular choice of supporting more conservative forces and the Pro-U.S.A faction in Poland. Will give a chance to improve relations with U.S.A while gaining support or at least not radicalising it's own right wingers in Germany. It would gain a gigantic media backlash and send shockwaves across German businesses however.
While a German business focused government would work closely with Donald Tusk and sabotage state projects in Poland that could compete with German businesses.
Donald Tusk also is a yes man towards German businesses. Not much will change unless German government changes policy or a new government emerges in Poland