I'm sorry but if an enterprise team can't at least get a stopgap ecommerce site up and running in a week, what are you even doing? Literal amateurs can launch a WooCommerce site from nothing in a weekend; two Stanford grads in YC can do a hundred-fold better than that. Yes, a big site is more complicated, maybe there will be some frazzled manual data entry in Excel sheets while your team gets the "real" site back up, but this is total madness.