Oh not _this_ again.
IT WAS NOT AN INVESTMENT.
This is a widely-repeated lie.
Gates did not “save” Apple. Microsoft did not “invest” in Apple.
Microsoft stole Apple code. Apple sued. The companies settled out of court.
The famous US$150M payment from MS to Apple was not an investment. It was punitive damages. Microsoft Video for Windows contained code stolen from Apple QuickTime. The money was MS paying the penalty.
Citations:
• Stop the lies! The day that Microsoft 'saved' Apple | ZDNet https://www.zdnet.com/article/stop-the-lies-the-day-that-mic...
• San Francisco Canyon Company - Wikipedia https://en.wikipedia.org/wiki/San_Francisco_Canyon_Company