OpenSSH? Apache? X11? Those are all licensed under BSD-style licenses and not GPL, and they are still widely used today, moreso than any proprietary version.
X11 was the typical example of BSD failure. X11 had an MIT license, got taken in by proprietary vendors who had their own X's all with cool features, most of which are still not in the X11 on Linux. There was no free usable X for Unixes for years. Essentially the XFree86 people had to start from scratch and this took years. Eventually XFree86 became the standard X, but only after the entire X model was outdated. The result of the BSD license was a disaster for free software one of the worst free software disasters ever.