maybe not reverted, but he would have probably help the medium-big companies in the country with some form of tax or subsidy, the National Bourgeoisie of Mexico (TELMEX, BIMBO, TELEVISA, CEMEX, etc.) would have been on his side since the US international companies did threaten them for like a decade until they were able to establelize themself, so they would have let Colosio have some Socdem reforms, its hard to tell what exactly would have happen with the TLC but, whats for sure is that Colosio would have been better than Zedillo who was a Salinas puppet