'Work sharing systems could [ increase the profit of / strengthen ] temporary staff agencies,
because there will be a greater demand for temporary employees.'
I guess 'increase the benefit of --' can be used in this context.
'Increase the profit of --' is, however, not so punchy and seems to lack a strong impact.
Can I use 'strengthen' in this context?
Or is there any good word for this context?
Thank you in advance.