The phrase "are driven mostly for" is not correct in standard written English.
It can be used when discussing motivations or reasons behind actions, but it needs to be rephrased for clarity.
Example: "The decisions in this project are driven mostly by financial considerations."
Alternatives: "are primarily motivated by" or "are largely influenced by".
Those are driven mostly by escalating costs for the benefit programs that liberals most aggressively protect — Medicare, Medicaid and Social Security — and by insufficient tax revenues to support them.
For years, software development has been driven mostly as a for-profit enterprise in which coders are hired to create applications for the organizations that employ them.
If, instead, he is driven mostly by disdain for one of the films -- say, "Rocky," -- he can vote for all four of the other nominees.
SNPs with low call rates were driven mostly by genotyping failures for individuals with whole genome-amplified DNA for that particular SNP only.
The downgrade was driven mostly by a gloomier outlook for rich countries, particularly in Europe.
The company said this was driven mostly by the loss of work for Verizon Communications, which decided to handle its own technology work.
The lowest mean proportion of sailfish [sailfish/(sailfish + spearfish)] of the third quarter were driven mostly by the low estimations calculated for Japan and Brazil.
The high initial costs of HEVs currently prevent them from gaining a market share (e.g., in Turkey) [32], the WTP for HFCVs is driven mostly by expectations of personal financial savings (e.g., reduced running costs) [65] and there only exists a WTP for methanol if the cost burden is shared [81].
He believes Madoff, for example, was driven mostly by "a sense of stature" and an unwillingness to show failure as an investor.
The situation was very different for landscapes in which epidemics were driven mostly by between-field infections.
