widdlewade
I direct you to
About the Android Open Source Project | Android Open Source
"Our primary purpose is to build an excellent software platform for
everyday users.
... and the result is a full production quality consumer product whose source is open for customization and porting."
By porting they imply the ability to use their source on a variety of devices. (See Governance Philosophy, 3rd paragraph
http://source.android.com/about/philosophy.html)
Now as to your comment above about flashing a "ROM as being one of the big enticements behind Android", you are correct in this, that android itself is able to be used a wide variety of mobile device applications. However it is the the manufacturers and service providers that limit the installation of unsanctioned operating systems on their devices. Reasons for that can be seen above.
We aren't discussing the hacking community for AC, we are discussing the hacking community of the HTC Evo, which is a fraction of the total hacking community at AC, and also a fraction of Evo Owners.
And we are discussing HTC EVO Hacks yes? I thank you for your time at Crackberry, but unless you are cooking your own roms for the evo, you are accepting what others are giving to you, again for the evo.
My point with this again is that rooting is a privilege where allowed (or in most cases, not prevented) by the manufactures. If they don't allow it then they don't allow it. The phone is being marketed for its features, not the ability to "root it". Thats what the G1 and N1 are for.