See https://sourcehut.org/ for a vastly different source code hosting solution. If you're interested in something other than an open source GitHub clone, then that is more likely to interest you.
Sourcehut is specifically designed to be a composeable set of services, so regardless of language, it's never going to be one binary.
Hm, monolith != unscaleable monolith. Monolith just means you'd have to do vertical scaling instead of horizontal scaling, which arguably is easier and less error prone, as you still are only dealing with one instance and not building a distributed system all of sudden.
I usually try to keep to vertical scaling for as long as possible, until either the performance starts to plateau or the product/project becomes big enough that it needs different backend dev teams working on different things concurrently.
Thee reason for this is that writing anything at all to be scalable is quite difficult, and larger monoliths tends to reflect a laziness and false sense of simplicity that tends to also be reflected by the internal design. For this reason, I'd consider "large but scalable monoliths" to be in the minority.
Furthermore, I'd argue that if scaling of a monolith isn't a problem, it's simply because its load is insignificant in the first place. Once the scaling game starts, vertical scaling quickly ends up being infeasible.
Of course, that does mean that you can start out and experiment with a monolith while a product is young, but I'd prefer to have hashed out the overall design before I start dealing with production systems.
I'd design components around clearly distinctive areas of functionality rather than the distinctive teams that need to write it.
No imprint, no privacy statement, no deal.
Imprints on websites are only required in a few countries. Frankly, I find it absurd that on the one hand, my contact details as a domain owner are being removed from WHOIS citing data protection, but on the other hand I am required by law to put the same information on the website I'm running on the domain.
I am not going to pay money to some organization when I don't even know who that is and where they are located.
Sourcehut as a company is designed to make the relationship between you and the company clear: You are the paying customer, and funding the services. There is no secret agenda or external investor whose interests they must please. Plus, it's the most transparent company I know of.
While you could just ask your questions in #sr.ht, you can also read the financial report (https://sourcehut.org/blog/2020-01-13-sourcehut-q4-2019-fina...) and see what colos they are paying for. At the time, hosting was in San Fransisco and Philadelphia. You can also use their Prometheus instance to check how things are running if you'd like (https://metrics.sr.ht/graph). Both guys in the company's face can be seen and profile read here (https://sourcehut.org/consultancy/).
I don't think your questions can be answered to the same degree from other hosting providers, despite imprints.
I'd love to be able to use my own image, though, I feel bad everytime my build script has to use 3 minutes of build server slot time to download and install a bunch of packages before it actually builds my project, if I could make a custom docker image to build in, or there was caching, it would use less time.