... business is a social science, so that means there are not rules or laws of nature. Anything that works in one situation might fail to work in another. Something that failed to work for you might be the perfect solution elsewhere. That said, it is always worth sharing experiences in the hopes of pattern matching.
The first pattern is good to know, just not scalable or readily reproducible. That is when you have a co-located and functioning team and members need to move away for some reason then remote work can continue pretty much as it has before. This assumes that the nature of the work, the code, the project all continue on a pretty similar path. Any major disruption—such as more scale, change in tools, change in product architecture, change in what is sold, etc.—and things quickly gravitate to the less functional “norm”. The reality is in this case that these success stories are often individuals and small teams that come to the project with a fixed notion of how to work.
The second pattern that works is when a project is based on externally defined architectural boundaries. In this case little knowledge is required that span the seam between components. What I mean by externally defined is that the API between the major pieces, separated by geography, is immutable and not defined by the team. It is critical that the API not be under the control of the team because if it is then this case is really the next pattern. An example of this might be a team that is responsible for implementing industry standard components that plug in via industry standard APIs. It might be the team that delivers a large code base from an open source project that is included in the company’s product. This works fine. The general challenge is that this remote work is often not particularly rewarding over time. Historically, for me, this is what ended up being delivered via remote “outsourced” efforts.