Entain paid £750m for STS Poland in June 2023.

Three years later, Reuters reports it is exploring whether to sell its stake in Entain CEE back to partner EMMA Capital.

The markets didn't change. The math did.

Poland: 50% GGR tax. Slovakia: 30%. Romania: 27%. Croatia: no gambling ads between 6am and 11pm, plus a new tiered player winnings tax since January.

When Entain booked the STS deal, these numbers were already visible on the horizon. In Q1 2026, Entain CEE net gaming revenue fell 6% year-on-year - retail down 30% in the quarter.

That's not a bad quarter. That's a model that stopped working.

The original thesis was scale: buy the Polish market leader, combine with SuperSport in Croatia, build through the EMMA joint venture, and create something large enough to absorb the regulatory compression every licensed market eventually imposes. A £750m bet that CEE growth would outpace the arithmetic closing in from the west.

What the due diligence didn't weigh heavily enough: CEE governments can raise taxes too. Advertising restrictions don't stop at the German border. And STS does not run on Ladbrokes margins.

The operator leaving is never the real story. The operator leaving is the invoice. The real story is the decision made three years earlier - when the numbers were different, and nobody wanted to notice.

Entain will not be the last operator to find this in CEE. It is just the largest one to say it out loud.