Good. Hopefully more Subways do the same and shutter permanently. Subway's business model of sticking a store in every single place they can find and making local franchisees compete with and cannibalize each other has been ruining people's lives for decades. It's intentionally designed to fail, because they know there is a revolving door of desperate people who will sign their savings away for the chance at becoming a "business owner". The franchisee loses everything, and Subway still comes out ahead as they repo your store and sell it back to the next victim.
We don't need a thousand shitty Subways on every street corner. Do fewer, higher-quality stores and you'll make enough to pay your employees enough that they don't need to quit en masse.