Same as the present...
MySQL is great for smaller applications that don't have a lot of capital. Things like community forums and small business websites. It is free, and it has a great deal of support from the community.
Oracle will likely remain the industry standard for enterprise level applications. It is a must for any medium sized corporation on up.
The two don't really compete, though...so to compare them in that manner is apples to oranges. They are a similar product in that they both deal with databases. Other than that, they serve two very different populations.