I don't think OpenAI is a nonprofit as they are planning to commercially license their technologies. Ok, they limit investor returns at one-hundred times their initial investment, but I'd hardly call that a non-profit in the sense of the word.
I watched an interesting interview with a billionaire a while ago, who said that after you reach a given net worth it actually becomes very hard (unless you're unlucky) to significantly diminish your wealth through consumption, and that in fact consuming more goods often just increases your net worth: Luxury cars, apartments, mansions, real estate, parks, yachts or resources like gold often appreciate in value with time (at least they did for the last 60 years), so the more of your money you spend on these goods, the richer you'll become. The words that the interviewee used were "if you're rich you can't destroy money by consumption", which is of course not 100 % true, but explains really well why the rich are getting richer.
In addition, many countries have much lower taxes on capital gains compared to other types of income, which is another factor that favors further concentration of money with those people that already have a lot of money.
There a difference between best practice architecture and copying code: No one will sue you if you implement things the same way in different projects, but if you copy & paste a large amount of code from one project to another it might be problematic.
An employee also owns the copyright to his/her code (at least in most European countries), the company often just gains the exclusive right to use that code through the contract with the employee (or the law, in some countries). So whether or not it is you intellectual property does not matter that much, what is important is what's actually written in your freelancer contract. If you build a custom software system for a company I'd assume they will not simply let you sell "your" exact code to their competitor afterwards, at least if it's something that has some inherent competitive value (e.g. not simply an off-the-shelf solution like a CRM or website). Most companies make sure this can't happen even when working with a freelancer, so have a close look at your contract (if you have one). If there's no explicit contract it'll depend on the country you're in.
Would be great to know how exactly they store all the customer data on this edge network. Is it encrypted with a customer-specific key? If yes, when and how do they decrypt it?
The Blackberry founder Mike Lazaridis is a physicist and huge proponent of quantum computing, he funded among other things the "quantum valley" in Canada.
Regarding security I can't say much, if you plan to use the e-mail professionally I would recommend another provider, as it's still not possible to bulk export e-mails (after many years of asking for that feature). For me, data security includes availability, and if I can't export my e-mails periodically I'd say it's not really secure.