As a medical user, I really hope she will stick to this if elected. Trump is doing more "leave it up to the states" bullshit except specifically for Florida and no other state.
It's a plant that grows in the ground, it'll get about as corporatized as tomatoes. Meaning people will try, but they can't really stop you from growing legal plants in your garden.
Do you think buying it from a street dealer isn't corporatized? Cartels are basically just black market multinationals at this point. If anything, legalization would make it less corporate since you could grow it in your backyard.
It will seem more corporate once it's legal, but that's just because the business is being conducted in daylight.
Source: Canadian who grows a plant or 2 each summer
There's an in-between you haven't considered, which is my local mom and pop pot shop. Yes some of these dispensaries are corporations, eg Mr Nice Guy, but most are not able to be corporations due to issues with banking because it's not legal at the US federal level. If it became legal at the federal level, then there wouldn't be any barriers for Walmart or any other very very large corporation to take hold of the industry and capitalize on it.
As long as people are allowed to grow, I don't give a crap about Walmart or any other company selling weed. It's much easier to grow and process than tobacco, so there will always be a another market that offers quality.