The one for the lost isles of Elthis says they are 2 colonies there not garrison port which comes with the impetus that it profitable in some way that they were willing to fund a colony their on the other side of the world.
The existence of colonies is no guarantee that they're profitable. In our history colonies almost never turned a profit, most of the exceptions being when they had something to plunder. But even if all of their remaining colonies are as profitable as can be, it would still be a very big difference from them being able to consider the entire Old World, the northern half of the New, and the entire Arabyan coast, to be subjects of Ulthuan.
I don't know why we're discussing trade with Laurelorn.
To the best of my knowledge, Laurelorn is surrounded by Nordland. Nordland's common people are Not Happy with the Eonir. The Grand Baron is also Not Happy with the Eonir. The Eonir have killed people, blown up a substantial section of Nordland's economy, and assisted Middenland in publicly humiliating the Grand Baron before the Elector Counts.
Did the Eonir have strong reasons to do this? Absolutely. Is the Grand Baron highly motivated to seek revenge? Absolutely. Will the Eonir be trading through Nordland in the near future? No.
Laurelorn has Middenland to the south and the Wasteland to the west. It also has river access to the Sea of Claws via the Schaukel that Nordland could not blockade without using the Imperial Second Fleet, which would set off a political shitstorm and would probably be a bad idea when the Elf in charge of that part of Laurelorn is called 'Stormwitch' and that part of the coastline is dotted with names like 'Wrecker's Point' and 'Manann's Teeth'.