I see a crucial difference between these two regrets:

"I wish my wealth matched his."

"If I had stood by him in the year six, I would now have a just share in the sense of achievement he has from his career, and no casual observer could suppose me mercenary."

The first flies in the face of what the novel says, as you've shown. The second doesn't, as far as I know, though perhaps it's too modern a view of the importance of being self-made.