The vast majority of companies in the world, even the developed world, are small enterprises who don't warrant a single IT guy, let alone 3+ to ensure no single person can wander off with the keys to the kingdom. Unless you have a truly poorly-maintained system or utterly helpless desktop users, organisations under 50 seats generally want to outsource to a trusted partner. These will scale from one-man bands with a few sites under their belts up to large multinational IT providers, depending on requirements. Beyond that (rough) point, organisations will start to move chunks of IT responsibility in-house.
Even with 3+ support staff, usually there's going to be someone who's "more senior" (especially if they've been there 14 years) with not only greater levels of knowledge and access, but a much deeper level of trust from the rest of the team and other parts of the business.
At some point, you have to trust the people who work for you. Perfectly foreseeable that this would happen if the business focus isn't on securing and silo'ing data from their own staff. If it was, they would have business justification for a larger team and much more oversight from management, even a budget for external audits.
No sane organisation without such requirements is going to drop 100k+ per FTE on people who spend an idle 70% of work hours just checking each other's actions in case one of them quit. They're very likely to quit from boredom and working conditions, too.