The co-working concept is getting a corporate makeover. No longer is co-working only for solitary freelancers and early-stage startups; enterprise users are increasingly important in the flexible-office-space market.

“32 percent of WeWork’s clients are already enterprise clients — 1,000 employees or more — and they have plans to target midsize business,” says Chris Macke, managing director research and strategy at American Realty Advisors. “This is a major source of potential growth for co-working firms.”

At the same time, traditional real estate landlords and service providers have looked at the success of co-working firms such as WeWork Cos. and launched their own rival products in the wake of a shifting office landscape.

“Some people talk about a disruption. I think that’s actually the wrong term. I think it’s an evolution of the way space is actually being consumed by the ultimate occupier,” says Scott Marshall, president and chief deve