I'm not so sure the pricing and power plugs was the main issue even though it surely contributed to the collapse. Users were generally very satisfied with the service and felt it was well worth the money.
The problem as I've heard it had to do with not enough volume for all the satellite leases Connexion had to sign up to. Remember Connexion was designed pre 9-11 with hopes to attract major American carriers as their base. That never happened and LH/SK and a few others wasn't enough business to carry the cost.