At the upcoming Cannes Lions Festival in France next month, a vast numbers adtech companies will be vying for attention but there will be an inevitable winnowing. Consolidation will continues with the growth of larger, open platform technology companies. “There will be roadkill in the Lumascape,” says David Bell, Chairman Emeritus of the Interpublic Group, in this interview. Referring to a a complex chart of the adtech ecosystem maintained by LUMA partners.