Conway's Law applies here [1]. Poor architectural design can be rooted to how managers organize the team. If you want to see the architecture designed a certain way, organize the team structure along that line and the architecture desired will naturally emerge from the teams. If you have a misalignment of teams and architecture, you're always bound to hit friction along the way.

As you move up in leadership, the tool that you have is organizational design. Doing it right and you have a highly efficient org. Do it wrong, and you'll constantly hit roadblocks.

[1] https://en.wikipedia.org/wiki/Conway%27s_law