Not to mention that $5 might be the most expensive app someone buys, and then they expect updates for the foreseeable future despite on-going development costin

Not to mention that $5 might be the most expensive app someone buys, and then they expect updates for the foreseeable future despite on-going development costing loads more time. There have been developers who released a separate, paid sequel and were left with angry customers who expected updates to their original app.