The typical and commonplace advice to alert copywriters and insiders to their use of jargon is to ask an outsider - a non-specialist and definitely not a consultant paid by the organization to review copy for readability and comprehension.
But then what?
This is just another kind of alert - that we use jargon - but it doesn't provide a cure.
Customers and outsiders just don't have the capacity to rewrite sales, advertising and marketing copy. An audience doesn't really know they're the audience after all.
So, is there a cure?