The problem with "making all those decisions for you" is that writing good programs is hard and writing good frameworks is harder. Therefore, all else being equal the chances are that any given framework will suck. Five years ago Java had several hundred web development frameworks. 99% of those sucked and nobody used them, the others were built on the lessons learned from the sucky frameworks' mistakes, as well as the rare bit of genuine technical vision.
We've ended up with the Spring framework in Java, which is a top-notch web development framework; the first one I've met that really truly does not suck, and web development isn't even the main point of Spring. Contrast that with the decision Microsoft made for your web development needs in the form of ASP.NET, which is pure unalloyed garbage. It's built around some completely ridiculous metaphors and tries to fight every reality of the web platform, leaving you with a programming environment that's about as flexible as a brick. You can build dumb intranet web views that are completely un-abstracted and welded to the tables you've laid out in your SQL Server database, with rather limited control over any non-elementary features over the DBMS, and if you try to step one inch outside of that mindset then it fights you every step of the way.
That isn't even an indictment of Microsoft's technical development practices as it is a reflection of the fact that they only tried once and (since the odds were against them) they blew it. Many Java frameworks that were as bad as ASP.NET or worse came and went, what survives today is far more likely to be made of stronger stuff.
Fortunately for Microsoft that doesn't matter, because in most organisations the people responsible who choose the organisation's preferred technical platforms are not the people who actually have to use them. As long as their effort can be used to rapidly create a facsimilie of the equivalent demos found in the Java glossies and the number printed by wc -l is smaller in their version than Sun's they're fine.