Many Traveller adventures (and in similar systems/settings) are geared towards the PCs being fresh out of a career, with ‘assets’ amounting to massive debt, a half-collapsing rust bucket of a ship, and someone who can give them a job that might not kill them. Sometimes they do not even have the ship (but common advice is to get one fairly quickly: the game is titled “Traveller” after all). Incidentally, a similar thing happens in the various OSR scenes: there are squillions of starter dungeons and one-page adventures and so on, but very few published adventures aimed at sustained high level play (and even fewer good ones).