Why did the army of Jan Zizka not capture Prague and establish the same order there as in Tabor?

Zizka could probably have captured Prague, but it would have been possible to keep this huge city with a monetary economy alien to the Taborites in obedience only with extreme exertion. Meanwhile, the crusaders would have attacked the exhausted Czechs and defeated them.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.