This is one of the reasons that decent sized startups should be giving important people a dedicated company-owned device if those people need access to sensitive company info from their phones.
In the recent past I've had to fight for this with a previous employer who thought it was acceptable to impose security restrictions on personal devices that are used to access company info. Many people just stopped accessing company info from their phones - they would prefer to be able to root / jailbreak their phones if they choose to.
Simple thought experiment: your competitor is caught red-handed doing the thing you are pondering, how do you think it will reflect on them?
In the recent past I've had to fight for this with a previous employer who thought it was acceptable to impose security restrictions on personal devices that are used to access company info. Many people just stopped accessing company info from their phones - they would prefer to be able to root / jailbreak their phones if they choose to.
Simple thought experiment: your competitor is caught red-handed doing the thing you are pondering, how do you think it will reflect on them?