White Paper on Business of 6G. - Seppo Yrjölä; Petri Ahokangas; Marja Matinmikko-Blue; Risto Jurva; Vivek Kant; Pasi Karppinen; Marianne Kinnula; Harilaos Koumaras; Mika Rantakokko; Volker Ziegler; Abhishek Thakur; Hans-Jürgen Zepernick (CoRR, 2020)