I don't think Pip will put up with it. She's already pissed off that Toby's not really pulling his weight, doesn't get out of bed, couldn't even remember she had a talk to give, let alone turn up for moral support, stuff like that. She's not yet at the point of losing her temper with him, but I don't think it will be far off. I think crucially, she will be prepared to lose her temper, because she's not scared of Toby. In contrast, Rob was far more subtle, gave out quite a lot of sweetness that Helen wanted in the early days, and she couldn't put her finger on why she started to feel fear and that things weren't right, so then dismissed it. It's very easy to see where Toby is in the wrong.
I don't think either of them recognise themselves as being abusive in any way. We know Rob thinks the world is conspiring against him and he treats people the way he does because he thinks he knows best. I don't think Toby would want to be so controlling, because it would just be too much effort. I think they're both deluded about their own abilities and skills as business people though.