A change in management would be a risk; investors love the current team and CEO, and any changes there would be worrying. As an acquisitive company, it could make a bad acquisition. Though based on its history this is probably not likely, but is a risk at some point. As it gets larger ($66B now) its acquisitions could have less of an impact. Growth could slow. It is not entirely without economic sensitivity. Stock valuations could be hurt with inflation/rates (though this would also make acquisitions cheaper). It could face lawsuits from employees and/or competitors or other problems from acquired companies. It could see goodwiill write-offs if acquisitions do not work out as planned. It could fall behind in technology as new technology emerges.
5i Research Answer: