This was discussed a while back on this TheServerSide thread.
I sure hope Oracle invests in the product and doesn't slow bleed it or margainalize it. Of course that never happens.
I stand by my comment from February (link above) on why commercial proprietary software is at the bottom of my preference list.
. . . Back to GigaSpaces and Tangosol. They both have compelling technology, but both are small vendors. Where will this technology go? Will someone buy it to kill it? Will they buy it to grow it? Will they remain independent? Who knows. If it were open, well it doesn't quite matter. I can happily pay them now and perhaps someone else later - or no one if I can support it myself.