the guy might not have felt safe riding the edge of the road to let you squeeze through.
your definition of "enough room" is probably different to his and making him move over would have been forcing him to do something he didnt feel comfortable with, whats the rush anyway lol
'07 Vectra SRi
'11 Honda Hornet
'99 Aprilia RS50
'80 Honda H100A
'82 Puch Maxi S + '70 Puch Maxi N