I read an article last year about mass grown grocery store tomatoes that made sense. They are bred to survive the long hard journey in a truck to a grocery store (wherever it may be) from the distant locations where most in the US main market are grown i.e. California, Florida, South TX and border states and Mexico. Those are all a long way from interior states, eastern seaboard, Northwest and Midwest.
They are bred for thick tough skins and a resilient meat inside to survive the trucking and resist bruising, they are bred to be picked early to hopefully ripen in journey and at the store meaning they don't have much time to develop a lot of flavor on the vine. They are shipped in refrigerated trucks to impair spoilage and are low acid varieties to cut down on spoilage also. It's a wonder they have any flavor at all at the table.