I remember each of the architecture transitions (M68k->PPC, PPC->x86, x86->ARM), and perhaps the most vivid recollection I have of each one is that it made perfect sense at the time. In other words, it wasn't a surprise move by Apple, and I remember widespread speculation for years beforehand in the broader community (Apple users and otherwise).

PPC offered tremendous promise in the early 1990s at the same time Motorola's evolution of M68k was lackluster at best - so it made perfect sense that Apple would need to migrate away from M68k, and PPC was the optimal choice so as not to compete directly with hardware used by the PC market.

And when Intel/AMD were innovating tremendously in the early 2000s while IBM was lagging with bringing out aggressive updates to their PPC line, the switch to Intel seemed inevitable.

Even the idea that Apple should heavily develop their ARM mobile chips for future Apple products was discussed heavily in my circles since about 2016 (around the same time Intel started to stagnate their offerings). The earliest I remember was this blog from 2011: https://www.mattrichman.net/apple-and-arm-sitting-in-a-tree/.