It is ignorant of reality to expect a surfeit of recent antitrust cases, as those sort of cases are only made in the most egregious of violations, and long after the damage has been done. Such as around 1999, when the several states and the US Federal DOJ brought suit against Microsoft. Microsoft had been pulling anti-competitive moves for decades before, killing alternative operating systems like BEOS or OS2. The most recent related suit was brought up against the NFL for conspiring to violate the Sherman Act, but that was 10 years ago.
Microsoft - not a VC funded company.
NFL - government sanctioned monopoly, also not a VC funded company
Now, as to OS/2, people say "poor IBM", but IBM was the monopolist boogeyman in the 70's and 80's. BEOS simply wasn't good enough. Apple OS's and Linux did and continue to do quite well.
The DOJ went after Microsoft for giving away Explorer for free, which is what every browser maker does now, and has for 20 years. How that's bad for consumers I have no idea. As for Netscape, I switched from Netscape to Explorer because Netscape crashed constantly. That was hardly anti-competitive behavior on Microsoft's part, it was bad engineering on Netscape's.
Yes, I know IE crashed too, but nowhere near as often as Netscape.
I also give away the Digital Mars C and C++ compilers, the D compiler, and the source code to all of it. Is that anti-competitive too? How about all the other free software I use every day? Should the DOJ go after their creators, too?