H.: Niche-seeking in influence maximization with adversary

In hotly contested product categories dominated by a few powerful firms, it is quite common for weaker or late en-trants to focus only on particular segments of the whole market. The rationale for such strategy is intuitive: to avoid direct confrontation with heavy-weight firms, and to concen-trate in segments where these weaker firms have comparative advantages. In marketing, this is what people called “go niche or go home”. The niche-building strategy may rely on “homophily”, which implies that consumers in a partic-ular market segment might possess certain set of attributes that cause them to appreciate certain products better (in other words, weaker firms would customize their products to target some particular market segments and not the mass market). On the other hand, the niche-building strateg