What was it J.R. said? "That woman (Pam) has a habit of getting unearned money."
At this point Pam was just plain greedy.
Completely true. Pam never generated an entrepreneurial penny from a business that she started, or grew the businesses that she inherited (Cliff. for better or worse,
and maybe sometimes after significant failures did proactively grow Barnes Wentworth).
Pam was hypocritical, in that she urged Bobby to become more involved in Ewing Oil, then wouldn't support him in the Battle for Ewing Oil.
I know that there were extenuating circumstances, but the answer is not to flee Southfork, go to Europe, keep company with another man,
and blame Bobby for her Mother's passing when Bobby had no part in it.
If Pam was so strong, why did she complain to Bobby about not defending her during the argument at Southfork
when JR told her she was out of line about Miss Ellie wanting to break Jock's will!
Pam was a whiner and a hypocrite. She was fine with the wealth and privilege when it suited her (just like Miss Ellie) , but not when Bobby needed her, or when
Ewing Oil had a business deal/activity that she didn't like.
I would even say that Cliff had a legitimate point about the drill. She did eventually help Bobby, but at Cliff's expense.