At SFO now, tried sweet talking agent to no avail. She said the flight is not sold out which is the only way they can do upgrades at gate and then only with EB points. She wasn't all that sure how OT hands out seats but that they only get a certain # of seats that is - not all the empty seats are available for OT to sell. Seems like that leaves a lot of cash on the table. But I guess SAS doesn't wAnt to dilute the biz seat.