Of course there was commercial pressure. The pilot was a freelance, no fly no pay. It is also unlikely that the client would have paid anything, especially as the client realised the weather was bad and wanted to cancel.
Someone was going to have to pay the pilot's wage, the flight hours and the landing and nav charges as a minimum.
Do charter operators indemnify pilots for all costs in the event of the job not being carried out? Maybe, in the event of additional costs due weather en route but unlikely if the client hasn't even been picked up.
The commercial part of the CRM equation would have been quite high, if potentially self induced to some degree.