There is no one correct answer for this that would apply to all warehouse owners. Much depends upon the individual warehouse owner’s characteristics. A company that has a lot of money would be more likely to do well buying a trucking company, for example. So would one that at least has some experience working in the transport industry. By contrast, a warehouse firm that has no expertise in transport and has little cash flow would not be as likely to succeed if it bought a trucking company.
In general, this sort of purchase makes sense. Many companies have done well by participating in what are called “vertical mergers” or “vertical integration.” This occurs when a company buys another company with which it has a buyer-seller relationship. Such a relationship exists between a warehouse owner and a trucking company. This means that the merger could be beneficial. The warehouse owner would no longer need to go looking for a trucking firm to deliver to its warehouses or to take goods from them. If the warehouse firm does not have any of the disadvantages mentioned above, a vertical merger with a trucking firm would be a good idea.