JACKSON HOLE, Wyo. — Two of the most important economic facts of the last few decades are that more industries are being dominated by a handful of extraordinarily successful companies and that wages, inflation and growth have remained stubbornly low.

Many of the world’s most powerful economic policymakers are now taking seriously the possibility that the first of those facts is a cause of the second — and that the growing concentration of corporate power has confounded the efforts of central banks to keep economies healthy.

Mainstream economists are discussing questions like whether “monopsony” — the outsize power of a few consolidated employers — is part of the problem of low wage growth. They are looking at whether the “superstar firms” that dominate many leading industries are responsible for sluggish investment spending. And they’re exploring whether there is an “Amazon Effect” in which fast-changing pricing algorithms by the online retailer and its rivals mean bigger swings in inflation.

If not yet fully embraced, the ideas have become prominent enough that this weekend, at an annual symposium in the Grand Tetons, leaders of the Federal Reserve and other central banks discussed whether corporate consolidation might have broad implications for economic policy.