If I hadn't already given up soda years ago, then yes, this would have done it.
I agree with the other comments about addiction playing a big role in how difficult it is to stop drinking soda. There is so much sugar in everything we eat and drink these days - and that is not considering the natural sugars made from eating carbohydrates, like in bread. I regularly read labels and do my best to avoid anything with added sugars. It took awhile but my palette has changed and I don't like many things I did before, like Skippy peanut butter; I only eat organic peanut butter now because there is such a flavour difference.
I also concur with Michael J Rapp: how long did they know about the possible repercussions of this product before this legislation made them rethink their ingredient list? It is a prime example of how big companies are sociopathic: they are only concerned about serving their own interests (i.e. making a profit) and not about the public they are serving products to (and possibly harming).