Maybe we should go a step further and ask how it would be possible for Dutch to have become the lingua franca of Indonesia today. If it is, you may well see significant creolization of the indigenous languages.
This is possible had the Dutch been interested in doing that. When they arrived, they found Malay, the basis of modern Bahasa Indonesia and Bahasa Malaysia, already entrenched as widely spread local lingua franca. As such, it already has a rather simple grammar (I guess it could be said that this includes "creole-like" traits in this).
My understanding is that the Dutch took the path of least resistance in using the trade language already in use all over the place (and, in doing so, they spread it considerably further). Further down the line, they adopted an interesting educational policy consisting in favoring (for the higher Native classes) education and publishing in local languages (particularly Malay) converted into Latin script. Thus, many educated Indonesians had only limited incentives to learn Dutch (as opposed to what had happened in India, for example) However, it is not unconceivable that at some the Dutch government would choose to try to enforce Dutch instead. Perhaps a policy is mandated at some point from the metropolis aiming at "uplifting" the natives in a way akin to the French "Mission civilisatrice" (I'm not familiar with Dutch internal politics, but I suppose this would require some significant change in The Hague). This won't civilise anything, but just might establish Dutch as the dominant language in which the elite is mostly literate. For this to work better, you'd probably had this happen before Latin script for local languages is codified and disseminated. If the native language stick to Jawi script and other local alphabets, the only literacy that matters in the colonial context will be seen as associated with Dutch.
This might of course backfire after-independence and bring about some reversal policies, but at that point Dutch will have a powerful position, and the various Indonesian leaders might be unable to agree on an alternative national language (say, with the Javanese complaning if Malay is picked, and vice versa).