OK, maybe I wasn't clear enough with my words: I meant "the business". People who understand the needs of that business and their processes because they are the business. Not necessarily the end users themselves. Although it's your business experts who trickle the needs up the ladder.

IT taking decisions in a vacuum without implicating the people who know the business is how you end up spending millions to implement some solution only to see how things get even slower and people spend more time avoiding it, adapting it to their needs, complaining about it, than doing actual work.

Good IT is based on a set of principles that tend to be more stable, not on a set of tools that can change from one day to the next. And when you overlay the needs of your business over those principles you'll come up with the best tool to use. Putting the tools first means you're doing it wrong.

So if it's an accounting firm you might want to talk to some accountants or to someone who really understands their work and their needs before deciding that "EZ Spreadsheets" is the way to go because it's free, or because it's open source (and you love open source), or you worked with it in the past and liked it.