How did Microsoft solve the problem of copying Apple in the early days? Did Apple sue Microsoft?

Yes, I did it a long time ago.

Jobs wants Microsoft to stay in the lawsuit so that Microsoft can not concentrate on product development.

At first, Apple agreed that Windows3.0 could use the GUI of Macintosh os because Microsoft agreed to develop office for Macintosh os.

However, Microsoft still uses the UI in Windows3. 1, which caused dissatisfaction among Apple executives.

In fact, Apple itself copied the graphical interface of an electronics company called Xerox, but simply optimized it. Jobs said that good artists only copy, and great artists steal inspiration.