I hear you, I work for a large manufacturing company as a lead engineer (household name in the UK) and this complete lack of agreement between teams on how to do things results in a colossal amount of churn/wastage between "new shiny" and "already working".

Lots of "Lets move X to Y" which never gets completed then someone addes "Z" and now you have 3 ways of doing basically everything.

Worse is our documentation (which is generally good) frequently documents X but not Y or Z because the person who decided on Y or Z didn't look.

It's mentally fatiguing, I feel like every choice on what to use comes with more trade-offs than I should have to consider for something so simple.

Video conferencing is a good example, We variously have Hangouts, Skype and others, teleconferencing equipment in one room is one thing, in another something else.

The only reliable way to throw video to a screen is a USB-C to HDMI cable I keep in my rucksack.

Feels like half my decisions are saying "No" to an engineer who wants to replace Foo with a very shiny but 99% identical and unknown Bar.