I think that you don't know the origin of B4A.
Before B4A there existed B4PPC (Microsoft Basic for PocketPCs).
When Microsoft decided to launch Windows 7, which was supposed to be an operating system for PCs, phones and tablets.
The latest version of B4PPC was for Windows mobile 6.5.
But with Windows 7 all applications developped for WM6.5 were NOT compatible with the new version.
So Microsoft loosed the smartphone market.
And Erel moved to Android!
And even today the Windows market for smartphones is very very low.