I do not believe that Apple (a design company), can match the quality of Google (an algorithmic organization company), simply by allocating resources.

You can read two excellent essays by Justin O'Beirne on Google[0] vs. Apple's[1] methodologies for creating and organizing mapping data. It seems a straightforward conclusion that mapping is simply a problem that's a better fit for Google as a company than Apple.

Also note how slowly Apple's strategy has been rolled out (3% of the U.S.’s area in 2018), waiting for this work to be rolled out simply wasn't tenable.

[0]: https://www.justinobeirne.com/google-maps-moat

[1]: https://www.justinobeirne.com/new-apple-maps