The fact that they think the personal market is lucrative enough to break into while already being successful in the enterprise makes me sad that 1Password couldn’t be content with the personal market and instead decided it was enterprise or bust, much to the chagrin of many of their personal client base.
I believe that 1Password has grown significantly in the professional space, and that Okta likely sees this trend as a competitive threat.
If there's anything that Apple's upending of Blackberry taught us, it's that all you need is a one key decision maker in an entire organization to say "wait, why can't I use {product x}?" for that organization to slowly move away from the entrenched enterprise solution. The fact that Okta is joining the consumer space validates 1Password's decision to creep into the enterprise market.