Because Tesco's expansion has accelerated steadily. Expansion affects the sales of existing stores much. There are ways to do it so as not to impact too much on other fields.
Because Tesco has accelerated expansion continues. Expanding effect sales of the original branch. Is there a way to continue to do so that they do not adversely affect the other branches.
as Tesco has continued to expand its branches, branch expansion to affect sales of existing branch how much is there a way to do that is not to much impact to the branch.