This will be especially true for more specialized application needs, in which case you'll have to deal with smaller ISVs. In some cases, where it fits with corporate business objectives, he recommends that IS consider funding development projects or even investing in a smaller ISV if its products or technologies are potentially beneficial to the business. At Salomon Brothers, he says, such strategic investment and partnership agreements with small ISVs were common. And never negotiate so tight a deal that the vendor can't make money. In this regard, it's better to think of the ISV as a sort of partner than an adversary over cost.
Nothing truly comes off the shelf in packaged applications for the enterprise.
There will always be some customization. How much depends on individual companies. Most users agree that the best guideline is to look for the standard application to provide at least 80 percent of the functions you are looking for. Then be prepared to customize for the rest of the needed functions. We modified screens to meet the needs of our business.