This seems like a move meant for investor day and earnings calls to keep the big investors on board by saying "we are now selling stuff that we used to give away". Yet it is really just a financial shell game when these seats are being sold for less than regular main cablin.
The reality is that these "basic" customers book later (who wants to book a flight with a change fee that far in advance) and probably will have zero impact on PM and DM upgrades at booking because the PM and DM...
- Book sooner
- Will book a middle C+ seat only if traveling with a companion and the window or aisle is open
- Will take an exit row if C+ is booked.