[praveen9920]

Most of the subscription based saas products make easy money on inactive users who are okay losing money for prospect on using the tool in near future.

Even though that is easy money, saas companies should offer "inactive account maintenance" fees rather than full subscription fees, when the user starts using it, they could charge them full. This is win-win situation where user gets to keep the account for smaller fees and companies can retain more customers.

ProsperStack like tools can offer these by default.

[gfloyd]

This is exactly what one of our first customers is using ProsperStack for. They use it to offer an "on hold" option to maintain the account data in read-only mode at a lower price.