I use Concur as part of my job. It is stunningly, stupefyingly awful. However, it is popular with the kind of hyperglobocom companies that SAP deals with. I can submit expense reports (which take about as long as it would to scratch them into clay tablets) and I can book travel. That's about it. I imagine that -- for the anonymous finance dept folk who delight in taking weeks to examine my reports while I am legally…
The people who have to use this software the most (employees) would never willingly purchase it, but they are not the decision-makers for this purchase. A competitor might be able to gain traction by targeting small-but-growing companies that wish for a nicer future for their employees.