I think its will be goes to deeper specific technical & business sides to looking justification to use Oracle Java SE. Its pretty uncommon, but generally, most of us here just developing application and/or backend for commercial implementation, and didn't require much deeper technical things, like using other JDK's than Oracle Java SE is still handling good in most of our cases.
If you pay to Bellsoft or Azul, I think you'll pay for commercial support from them, like if you running company and using much Java in productions, implementing Java in mass scale, and/or enterprise support, and really need or require support system from Bellsoft/Azul.
*cmiiw