I get formatting, styles, animation, for free. I get cross platform graphics, video, and audio for free That is only true if by "for free" you mean you (or you

I get formatting, styles, animation, for free. I get cross platform graphics, video, and audio for free That is only true if by "for free" you mean you (or your users) get to exchange an oversized portion of their free memory and CPU cycles for those things. Better hope those users have at least as powerful a system as you do or they'll be looking elsewhere for their text editor, cooperative workbench or IDE.