Fears that insurance premiums will spike next year are premature, according to a new report that argues market competition will likely keep costs from rising. Critics of the Affordable Care Act have long warned that premiums for the ObamaCare plans would skyrocket in 2015 as insurers scrambled to make up for setting artificially low prices this year. Researchers at the Robert Wood Johnson Foundation argue those fears are misplaced. Researchers compared data on premium costs in eight states around the country and found competition in the insurance markets was typically high, especially in the cities.