Guess it depends on individual, if the offer is good and one is talking about half the price, why not? Especially if there is another round of merger talk soon, especially Starhub with M1 (even Singtel is looking at the possibility of buying M1 if IMDA allows its application), who knows when this honeymoon period will be over?
Not forget to mention, Simba may itself offer for sale if it deems that the fight is too uphill battle. Meanwhile, its strategy is to grap max mkt share to position as a strong player or prize for potential buyer.