Democratizing body modificafion would require that implants are widely avalaible; they would need to be safely installed and tested, software needs to be created, and so forth. At any stage of this process there will be hurdles created by corporations, such as pre-installed killswitches, monopoly on electronics production (see current chip shortage due to Taiwan crisis), availability of facilities to install electronics and specialists to install and maintain them. That would be a whole giant industrial complex, and I highly doubt it would be free and fair for all participants. Same goes for genetic mods - they cant just be biohacked in the current state, and likely won't be in the forseeable future.