There were little issues in the North nowadays - Jon was quick to resolve any major squabbles between his bannermen, and most were busy with construction - towns, roads and cities - all required a ton of coin and work hands. The other Houses might have taken construction and paving roads slowly, but House Stark had no such problem with the aid of the giants. Jon's visit to Essos might have been for vengeance, but the gold looted from the catspaw guild and banker families exceeded over two million coins, and in addition to the income provided from tributes, customs, and tariffs, they wouldn't lack for wealth anytime soon.