Speaking for where I know, immigrants have been substantially higher net contributors than non-immigrants while the research on wage suppression suggests it's a

Speaking for where I know, immigrants have been substantially higher net contributors than non-immigrants while the research on wage suppression suggests it's almost certainly not true except in some very small, very specific scenarios. So - are population and housing costs going up and infrastructure failing to keep up, while businesses don't invest? Sure - but that's down to a failure to invest the proceeds of change, not down to the change itself.