A graph shared on Slashdot at the time made a big impression on me. It shows that until the antitrust pressure started ramping up [1], Microsoft didn't lobby (as I recall).

The graph showed a huge spike in lobbying money after antitrust. Of course, this makes perfect sense in terms of incentives on both sides. Perhaps this [2] was the graph.

[1] https://en.wikipedia.org/wiki/United_States_v._Microsoft_Cor...

[2] https://www.washingtonpost.com/wp-srv/business/images/micro1...