This could have actually happened. Back in the 1980s, tobacco company Philip Morris owned Kraft and General Foods, and tobacco company R.J. Reynolds owned Nabisco. In both cases, the tobacco companies attempted to make their food products addictive.
https://lsa.umich.edu/psych/news-events/all-news/faculty-news/many-of-today-s-unhealthy-foods-were-brought-to-you-by-big-tobac.html
