A Read-only text editor does not change the cursor to an I-beam. It should, or else there is no visual feedback that selection is allowed. Furthermore, the accuracy of placing the selection starting point is worse with a regular pointer than it is with an I-beam.
I understand that certain people may think changing the cursor to an I-beam on a read-only TextEditor is a bad idea but let me point out that both Windows and Mac OS do this for selectable read-only text.
