what happened to Mr. Doolittle in act 5

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He has been totally changed as he became a gentle man out of a joke made by Mr.Higgins ..he told one of his friends that he has one to be the symbol of the reformed society as his friend wanted to put millions in this project..he became now one of the middle class people which annoyed him very much and that is because the headmaster of this job had died and he got all the money after his death as he was used to doing everything by his own not by the sevants ..also he has now lots of business to do but he is not used to be in responsibility also he was used to borrow money from others every night but now he is the man they borrow from .