> Apple's original deal with Microsoft for licensing Applesoft Basic had a term of eight years, and it was due to expire in September 1985. Apple still depended on the Apple II for the lion's share of its revenues, and it would be difficult to replace Microsoft Basic without fragmenting the software base. Bill Gates had Apple in a tight squeeze, and, in an early display of his ruthless business acumen, he exploited it to the hilt. He knew that Donn's Basic was way ahead of Microsoft's, so, as a condition for agreeing to renew Applesoft, he demanded that Apple abandon MacBasic, buying it from Apple for the price of $1, and then burying it.
https://folklore.org/MacBasic.html
It was a shame, since MacBASIC allowed users to write software that supported the features of the Mac UI and Microsoft's BASIC did not.
> Benchmarks published in Washington Apple Pi Journal suggested that MacBASIC had better performance as compared to Microsoft's MS BASIC for Macintosh. The language included modern looping control structures, user-defined functions, graphics, and access to the Macintosh Toolbox. The development environment supported multiple programs running simultaneously with symbolic debugging including breakpoints and single-step execution.
https://www.wikipedia.org/wiki/MacBASIC
However, the late betas were out in the wild with no copy protection, so it was passed around by user groups.