I find this question interesting (obviously because I'm responding to the list) and have done for decades.
Providing a reasonable email solution has become more and more complex while public perception is that email should be, and is, free.
I see lots of sides to this debate, some have already been covered by many of you already.
* Stuff has to be secure
* When stuff becomes insecure it starts to cause headaches for others.
* Keeping stuff secure gets harder and harder
* Customers want more and more features
* Customers should pay for some features/service
* Some IT folk are standing up systems to help others reduce costs - again causing headaches for others
* Some IT folk have set up expensive systems, funded by data mining and not customers.
* Some IT folk simply object to data mining - some folk act on that objection.
* There's a lot of 'activism' in the email space and has been for a very long time.
* Some of the 'big providers' take some of the heat out of the activism, which only winds up some IT folk even more.
* Knowledge and skills with people who can, and will, set up small systems is thinning as demand is growing.
* Some want to grow and drive others to rise up their skills.
* Some of those "drivers", I think [1], 'attack' learners, not unlike throwing the Apollo crew in a rocket simulator, hoping they will rise up their skills.
* With limited revenue, and constant 'driver training', some eventually abandon the game.
* Some view that driving training is important if you want to have skin in the game, but quickly forget their time is funded and they're not funding idealism.
* Some see their lunch being taken by a rise of good 'free' software. Some react by [1] driving more updates, features and improvements 'help', which just overwhelms small operators.
* Some had no choice but to stand up small systems but 'now free offerings' have empowered them to abandon the space.
* Some have no thought around the issues, others simply don't care - some days there are just bigger fish.
Personally, I identify with some of these issues, and perhaps there's more, but it's the 'fish' question that right now connects with me the most...
https://scontent.fhlz1-1.fna.fbcdn.net/v/t1.0-9/118984848_10158758280448988_8560408895957059983_n.jpg?_nc_cat=105&_nc_sid=8bfeb9&_nc_ohc=VvSoKwD8SqkAX8hIeXE&_nc_ht=scontent.fhlz1-1.fna&oh=69fc9c56a2e95fabe5cb637ba294ab35&oe=5F7F5EB4
In a country of 5 million people, this graphic says we have ~18,000 people waiting for social housing. The idealist in me has turned it's attention, and while I still operate my own mail systems (mainly because I like to able to back it up and add capacity more quickly and I have trust issues with big providers changing the rules mid-stream), I to am leaning closer and closer to calling time...
...anyway, thanks for your eye balls, I'm off to put some paint on a building ready to launch a community housing trust to address that graphic.
[1] - Tin Foil Hat time.....
D