Wordpress vs. Joomla membership separation

Hello

I'm curious to know why Joomla & Wordpress have separate membership.
With Joomla membership I can't ask Wordpress question in forum.

What is the philosophy behind this separation for single user

Hi,
It quite easy.
We sell themes and templates, most users choose only one CMS - which they know.
But you can buy both membership.

P.S.
Support is only for active membership.

BTW
You should be happy, on themeforst you can buy only one theme/template ones and support is only for that chosen one.
And here you can ask us about any GK J! or WP product (depends of membership), which is still available.

Thanks Oscar,
Your reply described existing situation not the reasons behind it. It sounds more like technical issue caused by lack of planning at the beginning rather than a thought through business idea. I'm half supported, but remain happy & curious

I cannot say, because I didn't programmed it.