As of their most recent balance sheet, Apple holds $90Bn in cash and cash-equivalent assets, plus another $100Bn in marketable securities. They could probably r

As of their most recent balance sheet, Apple holds $90Bn in cash and cash-equivalent assets, plus another $100Bn in marketable securities. They could probably raise another several tens of billions of dollars with bond market issues if they wanted. If Apple goes into manufacturing their own semiconductors, they could absolutely bootstrap the whole shebang and have tens of billions of dollars left over.