Throttling back on oil production hasn’t helped OPEC and its allies to push up crude prices lately.

At least four times in the past 15 months, members of the alliance known as OPEC+ have slashed oil output, only for prices to soon retreat anyway. A surge near $100 a barrel petered out earlier this year, and crude futures tumbled 10% in the two weeks after the coalition announced a roughly 5% reduction on Nov. 30.