When ths was implimented in Italy the issues it raised were widely discussed and there was a supposition that no matter what Hosts thought it would be expnaded in due course, I am slightly disappointed that it was with no prior notice, but not surprised.
From a selfish perspective as I have lots of short stay guests I can deal with the consequences by slightly increasing my rates.
Bigger issue for those who have much fewer but more substantual bookings, especially if they have a limited season.
Scenario, you have a major event next year, wedding family get together whatever, not sure how many family and friends will come so you can collectively book the accomodation for the max attending knowing that once you have a final head count a week or so before the event you can cancel anything not needed at no cost.
Now if you have a prestige high end property getting big dollars in prime season, not somewhere that somebody is likely to book short term on a whim, what are you thinking, is this the sort of behaviour AirBnB wishes to encourage?
David