While there have been many benefits of these conservancies, questions still remain about their success. As of 2004, no quantitative studies had been done to determine if the conservancies have actually helped in protecting biodiversity, (but see the surveys reported above) or in increasing wildlife populations of all threatened species. One concern is that the conservancies might encourage the populations of only high-value game species, and ignore the others. This might not be optimum for biodiversity, although of course far better than if communities were gaining their income primarily through livestock and cropping, as they did before the conservancies were initiated. A way to possibly alleviate this problem might be to focus the profits on non-consumptive uses, such as ecotourism/safari activities, in which the only thing to shoot with is a camera. However, ecotourism likewise could lead to favouring of those species that tourists like to see, and can have major impacts in terms of infrastructure development, pollution, and other pressures of increased numbers of visitations.