Complex sentence: Several Peet's employees, customers, and managers in California have been become publicly agitated by the increasingly corporate nature of the store, claiming that since going public Peet's has lost much of what made it worthwhile in the first place.
Split into simpler sentences: Several Peet's employees, customers, and managers in California have been become publicly agitated by the increasingly corporate nature of the store. Claiming that since going public Peet's has lost much of what made it worthwhile in the first place.