Not Just Women
I think these campaigns fail when they make it about 'women'. Considering "Brockman hosted "Billionaire Dinners" through the 1990s and 2000s, events where the wealthy and powerful rubbed shoulders with the best and brightest. Yet, with very few exceptions, invitations to these events went to men of influence and power. " (my emphasis). The rich and powerful are invited to these things. If you are part of the wrong social class (especially in the UK) then you have virtually no chance regardless of your gender. By focussing on just women's lack of opportunity it breeds resentment amongst the many men who also have no opportunity to progress which in turn makes them less likely to be willing to support women in their fight against inequality in those areas of their life where gender bias really does make a difference. Inequality should be fought on behalf of the disadvantaged where ever it occurs regardless of people's gender (race, sexual orientation etc).