How do wealth influence Tom's Walkers behavior in the story

Tom does not change very much even when he does have money. After he is rich, he is still frugal and stingy. He has a fancy house to show off his wealth but no furniture inside.

"He built himself, as usual, a vast house, out of ostentation, but left the greater part of it unfinished and unfurnished, out of parsimony. He even set up a carriage in the fulness of his vain-glory, though he nearly starved the horses which drew it; and, as the ungreased wheels groaned and screeched on the axle-trees, you would have thought you heard the souls of the poor debtors he was squeezing."

how does Tom walker change his behavior as he grows older on page 237 ? What motivates this change - The devil and Tom Walker "