What many people do not realize is that as technology advances, it also disperses. If one examines technological advances, one sees that as they more rapidly advance, they more rapidly disperse. CRISPR is already 'in the wild' today. There's nothing magic about it, and the most expensive and difficult part of the mechanism is learning how to do it. The necessary equipment is commonly available off the shelf, at very reasonable cost. You can buy used equipment today, such as a PCR machine, for the cost of lunch at McDonald's.

3D printers are already widely dispersed throughout the population, and are able to manufacture items with materials ranging from dirt, water, plastics, food, cement, and actual living cells. I've seen brand new 3D printers for sale for as little as $50. Obviously, not all 3D printers are of equal quality, and prices can range into $millions for systems, depending on the features of the devices, but you can get started for the cost of lunch. I didn't mention the various methods of printing circuits, but it isn't a neglected medium. People will soon be printing their own computer hardware, making the kinds of implants mentioned in the OP DIY potential.

Recently a furor erupted over facial recognition technology. Well, furors erupt every day over facial recognition tech, as it is more and more intruded into our lives by surveillance happy governments and corporations, but this furor was different. It was over individual civilians using it to compare social media profiles of women to porn. The developer claimed to have identified over 100k women. Some women have raged that they might be identifiable and linked to their actual persons, but the elephant in the room seems to be little addressed: the very tech that is being used to repress civilians by despotic governments and rapine corporations has passed into the hands of their victims, and covert government actors, criminals, and the corrupt of every sort are now no longer going to be able to count on anonymity as folks using social media and facial recognition software can crowdsource identification of bad actors.

Technology always empowers individuals more than institutions over time. This has been true since the pointy stick allowed an individual to improve their chances against a gang of thugs, and I see no reason it could ever be untrue. While institutions currently are possessed of greater wealth and power due to centralization of industry and the parasitization of the production of individuals, that concentration of wealth is necessarily accompanied by centralization of authority, which limits institutional expression of that power concomitantly to the degree of it's concentration. ABC Corp may have more money to spend, but it has relatively fewer avenues to do so as it represents a greater number of individual's wealth. As technology disperses, that power of institutions increasingly becomes a disability, since the breadth of means of production cannot be fully exercised by a corporation, as it can be by a population of individuals. A corporation with the power of 1000 individuals can deploy that power in one way, but 1000 people can deploy each of their power uniquely.

Decentralization is freedom, and Centralization is despotism. Freedom is more powerful. Every time.