What slowing additions to refining capacity will mean to the industry

What slowing additions to refining capacity will mean to the industry
Announced refining capacity additions remain high relative to recent history, but will be lower than previously forecast. Conversion investments continue to exceed distillation and will increase complexity in the refining industry with potential opportunities for refiners, traders, suppliers, shippers, and the EPC industry.
Source: McKinsey

What slowing additions to refining capacity will mean to the industry