Prerequisite required by who, and why is that entity motivated to design such a requirement? Universities also want more novel breakthrough papers to boast about and to outshine other universities in the rankings. And if one is honest, other researchers also get more excited about new ideas than a failed replication that may for a thousand different reasons and the original authors will argue you did something wrong, or evaluated in an unfair way, and generally publicly accusing other researchers of doing bad work won't help your career much. It's a small world, you'd be making enemies with people who will sit on your funding evaluation committees, hiring committees and it just generally leads to drama. Also papers are superseded so fast that people don't even care that a no longer state of the art paper may have been wrong. There are 5 newer ones that perform better and nobody uses the old one. I'm just stating how things actually are, I don't say that this is good, but when you say something "should" happen, think about who exactly is motivated to drive such a change.

I think Arxiv and similar could contribute positively by listing replications/falsifications, with credit to the validating authors. That would be enough of an incentive for aspiring researchers to start making a dent.

> In software it's common to value independent verification - e.g. code review. Someone who is only focused on writing new code instead of careful testing, refactoring, or peer review is widely viewed as a shitty developer by their peers.

That is good practice

It is rare, not common. Managers and funders pay for features

Unreliable insecure software sells very well, so making reliable secure software is a "waste of money", generally

> Presumably, there's a step in this process where money incentivizes the opposite of my suggestion, and I'm not familiar with the process to know which.

> Is it the university itself which will be starved of resources if it's not pumping out novel (yet unreproducible) research?

Researchers apply for grants to fund their research, the university is generally not paying for it and instead they receive a cut of the grant money if it is awarded (IE. The grant covers the costs to the university for providing the facilities to do the research). If a researcher could get funding to reproduce a result then they could absolutely do it, but that's not what funds are usually being handed out for.

Universities are not really motivated to slow down the research careers of their employees, on the contrary. They are very much interested in their employees making novel, highly cited publications and bringing in grants that those publications can lead to.