"It is reasonable to focus only on the profitable companies and ignore those with consistent negative ROEs - the chronically unprofitable companies," Lazar and Prisman wrote. Lazar, who has a PhD from Harvard University, has written several books, including The New Protectionism: Non-tariff Barriers And Their Effects On Canada, published in 1981. Prisman has a DSc in operations research from Technion - Israel Institute of Technology. His areas of expertise include derivative securities.
"Economic theory and common business sense dictate that unless a company earns at least a risk-adjusted, competitive ROE over time, it will exit the industry,” Lazar and Prisman wrote. “Few of these companies ever left the industry, and most that remained invested even more capital into the market."