The phrase "a profitable area of" is correct and usable in written English.
It can be used when discussing a sector, field, or market that generates financial gain or benefits.
Example: "Investing in renewable energy has become a profitable area of growth for many companies."
Alternatives: "a lucrative sector of" or "a beneficial field of".
Swiss Bank also acquired two small but valuable firms in Chicago: a derivatives business, O'Connor Associates, that gave it a solid base in what turned out to be a profitable area of trading, and Brinson Asset Management, a thriving money management firm.
"Scientific disciplines proceed through a period of stasis until a profitable area of overlap with another discipline is identified.
This would be a profitable area for future research.
If there are some of these nearby, it means other businesses have marked this as a profitable area.[6].
"While Australia Post has been able to offset these losses by growing its parcels business, losses in letters are now so large that they are overwhelming all profitable areas of the business.
"You'd be amazed at how often, when you ask a business owner what's the most profitable area of your business, they don't know," Mr. Walker said.
Sony, naturally, is not commenting, but when Chief Executive Howard Stringer chose to talk about other areas of the company's business in his CES keynote speech - a platform on which you'd expect a fullscale PS3 hype attack (especially as videogames are easily the most profitable area of Sony's consumer business) - rumours of a delay are bound to propagate.
We want to invest aggressively to make sure that we become the most dominant player in the most profitable area of the internet in China," he says.
So far Sotheby's has captured the big collections for the important spring auction season in the most profitable area of the business, Impressionist and modern art.
Then there is the highly profitable area of spiritual and religious travel -- trips to the Holy Land and Rome, as well as to Lourdes, the Ganges River and Tibet.
Sports books, the most profitable area of online gambling, were looking forward to the start of the professional football season in the U.S. on Sept. 5.
