Originally Posted by
lokijuh
The day QF does this is the day I would sell all my QF shares (that's if I had any!) . This approach (which is now an expectation in domestic market in US I gather) hardly helps airline profitability in the long term.
well, it certainly doesn't need to be unlimited, or "free". AA runs, and until this year UA ran, an instrument-based domestic upgrade system for elite members. the revenue involved is nontrivial. the instrument upgrade seats aren't released at time of booking, but only in the week before departure.