"Capernaum, rather than Nazareth, became the centre of Jesus' activity, owing to the hospitality and the following he enjoined there. Two pairs of brothers, Peter and Andrew, James and John, stand out as leaders -- and leading supporters, from their family holdings in Capernaum -- of Jesus' movement at this stage, from around AD 24 (Matt 4.18-22; Mark 1.16-20). They commanded sufficient resourced to be able to support Jesus as well as their own families, and yet kept a sufficient distance from the economic system of the Roman estates so as to enable Jesus to persist in his criticism of unjust mammon, as he said in Aramaic (Luke 16.1=9)...Indeed, journeys outward from Capernaum were to some extent undertaken, the synoptic gospels indicate, to avoid the crush of sympathisers (Mark 1.35-38; Luke 4.42-43).
p. 78 in the essay by Bruce Chilton "Friends and Enemies" from the edited volume Companion to Jesus (Cambridge university press, 2001).