Google got 17000 patents when they bought moto and now while selling moto to lenovo, they gave only 2000 patents. But lenovo got the license for the remaining patents as part of the sale. So they have all the technology to develop great quality phones like moto g.
But moto g is now sold at very low margin because mighty google can afford it(It'll make it up in software). But lenovo is no google. so they have to sell at higher margin to bring profit. So even if they make phones like moto g, the price will be higher...