Without knowing more details, how can you state the above so confidently?

It's safe to assume that Ellen is a smart woman who realises the risk this poses to her career, and any smart person wouldn't wish to burn the progress they have made over years for some mythical "pay day." That's why I can say with some amount of confidence that KPCB failed to address concerns in a responsible manner and let things come this far.

To quote from the filing;

    Upon information and belief, Ray Lane and John Doerr discussed
    how to respond to to Plaintiff. Ray Lane met with Plaintiff.
    While acknowledging that Mr. Nazre's behavior was inappropriate
    Mr. Lane pressured Plaintiff to drop the matter because of
    Mr. Lane''s close ties with and mentorship of Mr. Nazre.
    Though Plaintiff had formally cmplained about Mr. Nazre's behavior,
    Mr. Lane encouraged Plaintiff to engage in a personal relationship
    with Mr. Nazre and even to marry him. Mr. Lane said, however,
    that in such case, either Plaintiff or Mr. Nazre would have to
    leave the firm because two spouses could not work together at KPCB.
    Mr. Lane said he and Mr. Nazre had discussed Plaintiff's report
    of sexual harrassment.
    
    KPCB was aware of and did not take reasonable steps to prevent
    retaliation and gender discrimination. KPC management was aware
    of and did not prevent Mr. Nazre from engaging in repeated
    retaliatory behavior for nearly five years. Following her formal
    complaint described above, Ray Lane insisted that Plaintiff
    have a one-on-one lunch with Mr. Nazre outside the office
    to discuss their relationship. Plaintiff saw no choice but
    to comply with the demand of a Managing Partner. Unsurprisingly,
    Mr. Nazre made inappropriate comments and engaged in unprofessional
    behavior, and seemed to be further empowered by KPCB to further
    retaliate against her.

... and we wonder why there aren't more women in tech.