Was Ronald Reagan's shift in politics an example of “It is difficult to get a man to understand something, when his salary depends upon his not understanding it!” (Upton Sinclair)? (see also: https://quoteinvestigator.com/2017/11/30/salary/)

Link to https://hypothes.is/a/Kft7kDOrEe6TQKcW-dREwQ in The Big Myth on Regan's shift in political views while working for General Electric.