The phrase "advantage has expanded" is correct and usable in written English.
You can use it when discussing a situation where a benefit or favorable condition has increased or grown over time.
Example: "Since the new policy was implemented, the advantage has expanded for small businesses in the area."
Alternatives: "benefit has increased" or "advantage has grown".
Like the charter-school movement in general, Advantage has expanded at a dizzying pace... Within two years, Wilson hopes to be running thirty schools, almost all of them in inner-city neighborhoods... Advantage's plan is to offer a low-cost education to the poor and, by exploiting the most recent educational reforms, get taxpayers to finance the entire enterprise...
Like the charter-school movement in general, Advantage has expanded at a dizzying pace... Within two years, Wilson hopes to be running thirty schools, almost all of them in inner-city neighborhoods... Advantage's plan is to offer a low-cost education to the poor and, by exploiting the most recent educational reforms, get taxpayers to finance the entire enterprise..
And, while the Net has eroded newspapers' advantage in disseminating news, it has expanded their reach and influence.
Employing this advantage, M13 bacteriophage (M13 phage) has expanded its use into novel research area, such as electrode, solar cell, environmental monitoring, plasmonics, cancer diagnosis, cell imaging, and functional device [17 25].
The candidates, political parties and a torrent of outside groups made fresh strategic investments and pumped yet another multimillion-dollar wave of television advertising into House races across the country, hoping to press their advantages across a battleground that has expanded to nearly 100 districts.
But we're going to take advantage of the fact that the audience for games has expanded.
Taking advantage of the chaos and resentment of the air war, Al Qaeda in the Arabian Peninsula has expanded its reach in the country.
While Obama has expanded the generosity of the plans and their availability to more Americans, relatively few eligible borrowers have taken advantage, according to the Government Accountability Office.
Its system has expanded rapidly.
The group has expanded fast.
Hargeisa has expanded even faster.
