many notable practitioners are highly profitable
I'm confused by '' many notable practitioners are highly profitable'' in this context?
As I checked many online dictionaries, practitioner is defined as a person who does a particular activity! The thing I can't get it is that how a person can be profitable!? you know, he or she is not a good to be purchased for making a profit!
Would you explain this sentence?
Yet today, many companies in these industries and others find that their transparent, customer-centric strategies for delivering value have evolved into opaque, company-centric strategies for extracting it. Although this approach may work for a while—many notable practitioners are highly profitable—businesses that prey on customers are perpetually vulnerable to their pent-up hostility. At any time, customers may retaliate with vitriol, lawsuits, and defection.