Is Doonbeg unlucky, an 18-hole money pit? Pummelled by Covid-19 closures (the group availed of government subsidies), revenue collapsed at the Co Clare five-star golf resort, which posted a loss of €3.59 million for 2020. A bad year on top of some not-so-good years for Trump, Inc in Ireland. The organisation has pumped around €40 million into Doonbeg since the red carpet was rolled out for the former US president who acquired the resort from receivers in 2014 at a knockdown price of  €8.7 million. But walking away from the Atlantic outpost with its championship golf links designed by Greg…