Forum Discussion
Power BI Vs SSRS
On top of what Matt already mentioned, most of the enterprise clients are going towards visualization tools that are more adaptive and responsive. Users want tools that look modern and can crossfilter when you click on charts.
SSRS has none of theose features and is very static. Also, there is a learning curve for developing reports in SSRS while in Power BI, you can make reports just by dragging and dropping. That said, SSRS still has it's space as there are some enterprise level features that are not available in Power BI yet (but I suspect that over time, Power BI is going to get a lot of those features).
Read the post below for the official roadmap for SSRS and PowerMap - https://blogs.technet.microsoft.com/dataplatforminsider/2015/10/29/microsoft-business-intelligence-our-reporting-roadmap/