The meta discussion vs the specific solutions discussions

A lot of climate mitigation/decarbonisation debates focused on particular activities. For example, Project Drawdown focuses on specific solutions in different ages e.g. transport, population etc. Why doesn't this project include somthing like carbon pricing which would be a meta solution affecting all areas?

it leads to a weird disjunction in the discusison where carbon pricing efforts don't even show up on drawdown's list.