I want to know the answer to the following question:
Why can't those countries compete?
All the background I'm provided with is that "In the early years other teams from Wales, Ireland and Scotland also took part in the competition, with Glasgow side Queen's Park losing the final to Blackburn Rovers in 1884 and 1885 before being barred from entering by the Scottish Football Association.". Is that enough to answer the question?
Answer: yes