RIM's BlackBerry PlayBook may have seen the same effect on tablet share in Canada as its close cousin the Kindle Fire did in the US, Solutions Research Group said Wednesday. Having had as little as five percent in the fall, it's now estimated to be up to 15 percent of tablets in its home country through the price cut to $200. The shift would have dropped the iPad's share from 86 percent to 68 percent, the Globe and Mail was told.