cra1948 mentioned The "big boys" have been at it a long time, have the resources and know what they're doing.
But I'm betting some of them hire pencil necks nickel savers in the main office with a myriad of ideas how to save a nickel. When they prevail there are some consequences and they are hard to hide.
Some spelling errors can be corrected by a vowel movement. ~ MOLON LABE ~