[5bolts]

none of what your suggesting is technically challenging to setup for a small org, scale it up to 10's of thousands for some companies, or more..

Plus its almost NEVER up to the tech people to deploy whatever they want, someone at the C level got a sales pitch for a given product, liked it (may have even gotten commission or a kickback) and told you to install, setup, support given product(s). or in my situation Infosec told the network guys to implement X and it breaks everything at the user level...

and your end users will hate you if you reinvent the wheel for every internal product/process... things like Jira put a ton of that kind of thing into one interface, under one user - preferably with single sign on.

your v1.0 of a given product will never be as easy to use, or well thought out as v10 of another vendor's product doing the same thing.

And those companies take care of regulations, scalability, and can even help with audit findings - not to mention gives you someone to blame when things hit the fan.