The problem with that approach is that as you scale up, it becomes hard to be sure you're isolated. And that lack of clarity in the human comprehension turns into technical ways in which it will turn out that you're not isolated after all, for instance my example of a base system library upgrade that one team does and breaks another team.
You can in theory fully isolate everything between teams, but without technical barriers preventing you from crossing, you will eventually cross.
Plus you have the problem that while full isolation will benefit your project and your company three to five years from now, violating the isolation benefits the company now. Every monolithic bit of software in the world could have been split, but there are real reasons why it wasn't, and they don't go away because someone observes that it could have been done a different way.
Isolated containers, by providing a technical barrier, allow the teams to be sure that they are both isolated from other teams breaking them, and breaking other teams, with things like library upgrades. It's a significant change.
It is productive to consider the difference in the Android world, but I would submit the isolation works in another dimension there, by virtue of the various apps being by necessity utterly isolated in Conway's Law terms. Within a single corporate entity there are many more temptations to get short-term wins by violating the barriers that theoretically should be there.
You can in theory fully isolate everything between teams, but without technical barriers preventing you from crossing, you will eventually cross.
Plus you have the problem that while full isolation will benefit your project and your company three to five years from now, violating the isolation benefits the company now. Every monolithic bit of software in the world could have been split, but there are real reasons why it wasn't, and they don't go away because someone observes that it could have been done a different way.
Isolated containers, by providing a technical barrier, allow the teams to be sure that they are both isolated from other teams breaking them, and breaking other teams, with things like library upgrades. It's a significant change.
It is productive to consider the difference in the Android world, but I would submit the isolation works in another dimension there, by virtue of the various apps being by necessity utterly isolated in Conway's Law terms. Within a single corporate entity there are many more temptations to get short-term wins by violating the barriers that theoretically should be there.
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