MT4 & MT5 default indicators vs. non-default indicators

 

Hello MQL5 community,

I'm curious about the indicators that come in the MT4 and MT5 platforms, and why there are others such as renko charts or THV Trix that you need to install,

I mean is there a reason why are the default indicators included or is there a copyright limitation from the others?

Will the others be added over time or will they be easier to install in future versions?