The thing is that for most business web apps rendering on the server side and sprinkling in some JQuery validation is good enough, and a pretty solid approach.

The thing is that for most business web apps rendering on the server side and sprinkling in some JQuery validation is good enough, and a pretty solid approach. Frameworks like Ruby on Rails or ASP.NET MVC provide a lot of infrastructure to do this, and it is easy to find people skilled in maintaining this. My last job was like this, my current job is more of a SPA but mostly because it needs to be, because of what it is. I always thing "horses for courses" when people make opinionated statements about what tech you should use.