You don't know what you're talking about. Biology is held back by the extreme difficulty of doing informative biological experiments. If you know of biology domains in which lack of good software is the primary rate-limiting factor, please share, because I am acomputational biologist, and always on the lookout for high-impact problem domains.
BTW, the software tools for the assembly of the human genome were mostly written in C++.
I'd understood - because we are constantly told by the Folding@Home people - that the problem was getting enough CPU for simulations. Is this not actually true?
The domain of biology that Folding@Home works on, i.e. predictive in silico modeling of protein folding, is microscopic in comparison the everything else biologists study. So while they may need more computing power a lot of biologists simply need more slave labor (grad students) and grant money.
There are lots of problems in computational Biology. Some can be solved by more processing time, for some you need to have better software, and for others more experimental data is necessary.
BTW, the software tools for the assembly of the human genome were mostly written in C++.