I've witnessed companies react with delight at the results after spending millions on consultants when all the consultants did was a few hours of explain query

I've witnessed companies react with delight at the results after spending millions on consultants when all the consultants did was a few hours of explain query and create index. Not my problem when I see it, way to go consultants charging millions, but it's amazing how poorly big companies are run that this seriously happens. You use a database? You have someone who knows how to add indexes right? Right?!