As said before the airlines said NO last time. Do you think anything has changed? What about land border crossings? What about Thai nationals? What about people with work permits? What about people who have insurance already? I'm sure this list can be expanded. Are the airlines meant to sort this out? Simplistic, poorly thought out policies often have very complex implemenations. This is one of them and to say just add it to the ticket obviously is too simplistic. That's why it didn't happen before.