It's not charity. Your health insurance pays for the replacement of the bacteria in your gut, makes it a condition of your policy, because it keeps you healthier. And it works.
The gene sequences a trade secret, there's no danger of shoddy knockoffs. And it's not a biosafety risk, either. It complies with GMO regulations, which means that after a few months the modified organisms die.
You'll feel sicker then, your colonized, weakened original microbiota no longer up to the task. You'll apply for another treatment, the second of many. It's not charity.