[Nasrudith]

Really this economically seems similiar to "permanent tourists" if taken to the logical extreme and extended indefinitely, their income source isn't taxed directly, they don't take local jobs, but do use local services. Healthcare is probably one of the most significant differences between transient and "permanent tourist" compared to transit costs. Not being seasonal is almost certainly an advantage unless it aligns with another industry's "off season" and the transit income is likely irrelevant to the host country.

It brings to mind a future organizational hypothetical of a "modularized citizenship" for work vs residence - unlikely as that may be given the tendency of nations to insist that their rules are the only rules and thus international laws are more like guidelines in practice.