The phrase "a sizeable business" is correct and usable in written English.
It can be used when referring to a business that is large in scale or significant in size or impact.
Example: "The company has grown into a sizeable business, attracting clients from all over the country."
Alternatives: "a substantial business" or "a considerable business".
The first is that investors will remain leery of GE's stock for as long as the company owns a sizeable business that is vulnerable to a systemic upset in the financial world.
With a fleet of 14 vehicles and 34 staff in peak season it too is a sizeable business.
Among two of the biggest: Sony has a sizeable business in audio hardware; and, by way of Sony Music, one of the world's biggest recording label conglomerates.
It has yet to prove itself a sizeable business for anyone involved, however, which could just be a case of the tech (especially on the user end) needing to play catch-up with the service.
Zscaler already has a sizeable business: it offers solutions for web security, email security, securing corporate data on mobile devices and data loss prevention, which it offers on a single platform to its clients.
Still, there's no doubt that returns specifically because of size/fit issues are a huge cost to the online clothes selling industry so any startup that can get some success with a method for cost-effectively shrinking returns has the potential to build a sizeable business in the virtual fitting room space.
You don't really hear a lot about OpenSky but it claims to have a fairly sizeable business: 50,000 stores, 2 million products, 5 million members and 100 million "connections" (a metric that it doesn't explain but I think refers to the total web of links between users of its platform).
There's certainly a strong, sizeable business for Snap even it if can't grow into a billion-daily-user juggernaut.
His mother's father started as a humble grocer, and on his wits and work ethic built a respectable and sizeable business in St .Paul, Minnesota.
These are all sizeable businesses already.
"Virtual fitting room itself is quite sizeable business — we're talking a million forecasted bookings — however I do believe our next step is the data business which will be even significantly bigger".
