I ask myself this question often leasha...

I think it's because most people don't really care what's in their food so long as it's cheap first and foremost, easy secondly & thirdly tastes good... Generally the crappier the food the cheaper the food. So, sauces with corn oil (most commercial ones) it's cheaper to buy a jar of sauce than it is to make one... So, people buy it. This means that availability must be kept up. Which means it's produced again and agian.

Bath is correct Australia is so far behind many other countries that disallow many of the additives we allow in this country...