The first person who starts a SnapChat and Patreon for a famous working animal, and uses it to defend their legal right to minimum wage and some degree of autonomy will change the world, regardless of the outcome of the case.

The first egg farm that pays the chickens a wage, and lets them choose between different "jobs" will make a huge splash. Once consensual animal products enter the free market, there will be a fascinating forcing function on animal welfare, possibly leading to legal personhood for some animals.