But it wouldn't. Almost every very large acquisition Apple could make would be acquiring a company with lower profit margins. Or less steady long term revenue prospects. It also means more people added to cover a larger group of products over a broader market.
Acquiring would boost "top line" numbers but it wouldn't boost bottom line numbers at the same rates that organic (internal) growth currently does. There is zero reason to appeal to non-internal growth when growing at a relatively high rate. There is perhaps a bit of freak out where Apple would have to invent top line growth to match some of the expected revenue growth built into the stock price but they don't really "need to" do that until the internal growth rate cools off alot.
There is no way Apple can soak up the parts suppliers without going into the part supplying business. They don't want to be in the part supplying business. That's not what they do.
So buying Adobe would mean they'd have to keep all of the non OS X and iOS aspects of that business. Shipping Windows programs. Creating programs for Android etc. etc. They is no way they could generate a 5-8% return on those businesses if they killed off the non Apple parts and just increased the amount of proprietary Apple focus.
That's one reason why Apple buys relatively small stuff. Low number of people added. If they happen "kill off that business" to re-purpose it to a different Apple agenda, then it is just 'noise' on Apple's balance sheet.
They could buy Adobe and merge it into their Filemaker business. Start to build a portfolio of pro app's again. Filemaker runs at arms length from Apple but they still show up on Apple's accounts.
Not everything has to be about what is best for Apple shareholders. How about what is best for me as a customer. How about Apple saying thanks for paying top dollar for our hardware products, here's some great software from us to go with it.
It seems to me like they don't want to do this because if they get there way you will only be able to buy any software for your Mac through the AppleStore, giving Apple 30% revenue in return for doing very little. The software makers just factor that 30% into their prices so in the end we the customers just end up paying 30% more for our Mac software. I'm sure that helps their profits but it doesn't help me much as a customer.