Dilution only occurs if you opt not to exercise your entitlement. In fact Lazard and Temasek would be better off if ABC undertook a rights issue and kept 100% of its US assets, than if it sold them at sub optimal prices.
Don't forget there is an equity component of the deal -- so not only is ABC potentially underselling to MS, MS is also picking up lots of cheap shares. This also dilutes existing holders. A rights issue would not.
ABS Price at posting:
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