What can you do with 12,000 employees with minimal experience and skills who have been working on a long-standing but now obsolete product line that was manpowe

What can you do with 12,000 employees with minimal experience and skills who have been working on a long-standing but now obsolete product line that was manpower intensive, when your business is being completely realigned around other product lines that still make a profit but rely on small numbers of highly experienced staff? This is not a random question; this company exists.