We're several years into that process already then. Apple researched this space for years and their first released product was a giant flop with no developer interest. Apple famously doesn't release anything until they "get it right". So the sound of crickets after an Apple event is already a warning sign.
The closer you get to that 5-10 years, the more these types of capital intensive projects start looking non-viable (think Apple EV) compared to cash cows like the App Store and iCloud.
This is a 5-10 year strategy, not a 1-2 year one.