jean yang is pretty much an industry legend at this point, and was hyperfocused on her specific kind of o11y (ebpf based drop-in traffic monitoring) which is an obviously important part of an overall o11y product suite that i think many players would either have to build or buy. i imagine she had her pick of acquirers.
edit: check out her interviews! crazy impressive https://www.listennotes.com/top-podcasts/jean-yang/