Dear IBM, HP, ORACLE, SAP, CISCO ...
On the off chance that someone is actually bidding for Salesforce and it's not any of you. Can I kindly suggest you get together and buy it between you as a consortium. There is one company (you already know who) that you should not want to get their hands on Salesforce. Even if it is unlikely, the remote possibility of this should be sending shivers down your spine unless you've got inside info.
PS. Check your value chains, take a good look at inertia.