Indeed, Mr Deighton believes that the television commercial will remain the mainstay of the advertising industry for years to come.

ECONOMIST: The recession in advertising

That is because natural-gas exports, long the mainstay of the energy industry, are threatened by shale gas in the United States (they have fallen by 5% over the past year).

ECONOMIST: Energy in Canada

These treatments became a mainstay of the nascent biotechnology industry, which started with the founding of Genentech in 1976.

FORBES: How The Odd Couple's Jack Klugman Helped Create The Biotech Industry

That kind of premium business is what a mainstay of the old printing industry--Heidelberger Druckmaschinen, a low-profile, 152-year-old German press manufacturer--is after.

FORBES: Hot type

The tourism industry, the mainstay of the economy in many of the small Eastern Caribbean Islands, is still very much beach orientated.

UNESCO: Introduction

Despite the years of decline, the cocoa industry is still the mainstay of Ghana's economy.

CNN: Ghana cocoa industry at crossroads

The with-profits policy, a mainstay of the life-insurance industry, is especially opaque, says the review.

ECONOMIST: Saving

Visitors from Japan are the mainstay of Guam's tourist industry.

BBC: Knifeman kills two in Guam attack

The decline has since slowed, Mr. Fain said, but the industry has also been affected by slumping economies in mainstay markets Europe and the U.S. "Given that we've had to face two such great shocks, we're lucky it isn't worse, " Mr. Fain said.

WSJ: Royal Caribbean Plans New China Launch

Even if, as Day argues, the price is low for the company that owns the supermarket-mainstay Hardys and Banrock Station wineries, the merger suggests IWIF's vision is playing out: The wine industry's globalization is inevitable.

FORBES: A vintage deal