At a very basic level, in order to function properly, people within an organization need to be able to understand each other linguistically and culturally; to collaborate, share knowledge, learn new skills, innovate together, and to work at their best with external clients and suppliers.
Employees are hungrier than ever for more professional development to bring opportunities and satisfaction to their working life. Even where development is available, access to it is often dependent on language proficiency, harming the prospects of employees but ultimately also limiting the organization and its ability to release (and retain) the power of its workforce.