What is so special about Jira , Agile and Salesforce?

What is so special about Jira , Agile and Salesforce?

"Steps onto soapbox" Warning if you love spending money needlessly, being inefficient and you have questionable competence please do not continue reading.

I have used many forms of productivity and project management software and I still am unsure why employers require certain software to be something you have used before.  What makes certain enterprise software so special? Feature , benefits, perception? In my humble opinion Trello does most of what you need for free that these other softwares do. Don't mention Trello in an interview however the weird looks will ensue like you use software that is not enterprise? The outrage! Where is my pitchfork?

Why do so many treat these software solutions like they have magic powers? Now Salesforce it's the same basic thing as Hubspot, Microsoft Dynamic, Sugar CRM and a list of others yet on a job description or even talking with a client it is the only CRM considered. Go do a side by side comparison I dare you. Dynamic and Sugar are the same thing and they are less expensive. What am I missing? Someone please fill me in. I feel like the blind where given the keys to the gun cabinet as they told me trust us we know how this works. I see so many major corporations throwing money at the wall and their strategy makes me want to pull my hair out. Give me a 1/10th of their budget and I would get the same results if not better.

"Steps off of Soapbox"

What are your thoughts? What am I missing here?