Another one of those articles, from Bloomberg, and now FastCompany ( And previous UBS Report ) whose reporter have little knowledge in how Semi Conductor and Modem Design works.
1. Intel didn't need the Modem to fill up its Fab, it has been trying to get back into Modem business ever since the acquisition of Infineon in 2010. And Infineon went from one of the best modem supplier to near death under Intel's hand.
2. Intel needed Apple to get into Modem business with Volume. There isn't another client on the market that uses Standalone modem with sufficient volume. And their partnership with Spreadtrum never planned out.
3. It is not that Intel Modem had to prioritise Apple so they can't full fill other clients needs. The truth is Intel had no other modem clients. There isn't any one in the industry who want standalone modem, not even in Tablet and PC Space, And even if they do, Qualcomm offers a much more attractive package.
4. It was Intel's mis management on Fab Capacity. It has absolutely Zero relationship with Intel priorities Modem Orders over high margin CPU business. Their original plan was 10nm will be done in time, everything will move to 10nm while modem could use the 14nm. That didn't work out. And given Intel's rapid expansion of Fab Capacity in a very short space of time it only proves how out of touch their top management ( or BK, ex-CEO ) were.
5. Even in the case Apple had 1000 engineers by the end of 2017, the chances of an Apple Modem in iPhone for 2021 will be close to Zero. It isn't just about designing the modem that is hard, you need lots of field testing, collaboration with Huawei, Ericsson and Nokia and every MNO in the world to basically Trial and Error. It takes times for Qualcomm, it would take even longer for Apple.
6. Qualcomm, and now basically everybody else including Huawei and Samsung are all developing their modem while working on the latest Spec. I.e it is a constantly moving Goal Post. It is the only reason why you can have 3GPP Rel 15 Released this year, and have chip shipped to OEM within months while the first Consumer Product sold within 12 months.
7. In the best case scenario Apple had 1000 engineers working on modem in 2018, the likelihood they have something for iPhone is 2022, and even that pushing a lot of boundaries. A more realistic case would be 2023. And that is assuming their Modem will be good on their first try, which according history, no one, including Huawei, Samsung, Nvidia, Mediatek AND Qualcomm for WCDMA has successfully done so. And in the case it was good, I doubt it will be as good as Qualcomm.
8. I doubt Apple even had 1000 engineers working on modem as of now. They are certainly recruiting, but not in those numbers yet. The 1000-1200 number seems to be pulled out of previous article from Venturebeat [1]
https://venturebeat.com/2015/10/16/intel-has-1000-people-working-on-chips-for-the-iphone/ . And because Modem / Wireless Engineers are scarce in the market. Getting enough people to work, again... takes time.
Edit: A Few more notes.
I would have thought Swan being CFO and a Financial guy would have counted pennies and be extremely conservatives. If anything Intel since BK left made lots of good changes. The hiring into Graphics, HPC. Recent announcement on FPGA, not very good but at least they are moving. Fab Expansion etc. So I think there is a lot of signs showing Intel is waking up. One possibilities for this article and recent rumours is that Intel thought the modem price to Apple were too low, compared to what Qualcomm were previously charging Apple. And it is likely Intel tries to hike the price of their 5G Modem while Apple is hardballing.