With IPv6 the smallest allocation an ISP gets is a /32 (and it's pretty easy to get more as the ISP starts to fully utilize that /32). And even a small busines

With IPv6 the smallest allocation an ISP gets is a /32 (and it's pretty easy to get more as the ISP starts to fully utilize that /32). And even a small business can get a /48 from an ISP with almost no questions asked. That means, starting out, a company can grow to 65K networks (each network with effectively unlimited number of nodes on it). And, just as you said, getting another /48 won't be a problem.