I&#x27;m pretty sure the premium-only airlines have all failed because (a) it&#x27;s hard to start an airline, (b) there are only a few routes where there is enough demand to fill a premium-only plane (which exacerbates all kinds of issues from competition to poor gate&#x2F;crew utilization to maintenance costs and so on), (c) most of the routes that could theoretically work are capacity-constrained, forcing these startups to use more remote airports (e.g. Eos flew into Stansted rather than Heathrow) which reduces their utility, and (d) did I mention that starting an airline is hard?<p>Other than that quibble, I enjoyed this post.