[ljm]

Before: FB doesn't own the market, so this acquisition is all good.

After: FB now owns the market; how did we let them become a monopoly!?

[vineyardmike]

(The review looks at the affect of the acquisition on market not just if they own the market already)

Before: FB doesn't own the market.

During review: FB would (/not) own the market with this acquisition. So we should deny (/approve) the acquisition.

After: Look the outcome we expected!

Much later: wow things change over time!