Gerry Ryan chuckles when discussing the implications for his technology investment given Amazon's impending arrival on the Australian market.

Ryan, a member of the Financial Review Rich List thanks to his four-decade ownership of caravan manufacturer Jayco, admits he had little feel for technology before he invested in technology firm Marketplacer - a firm that runs an e-commerce platform on which companies sell goods and services in various categories and run by Young Rich Listers Sam Salter and Jason Wyatt - in 2015.