I don't think so...
Can I make books and publications with Pages?
Actually, I think Pages was better. When I tried to convert my
Textbook to an epub with InDesign CS4, it either did a bad job or it simply crashed. The only major feature missing that I noticed was an automatic Index generator. InDesign was much better at managing an Index.
What does Photoshop do that Pixelmator can't?
Pixelmator would be a complete replacement for Photoshop, except that it's missing some cool features. Layer effects are nice - although, it's overused. Instead of using Photoshop gimmicks, I'm forced to create actual designs. And if I really need a drop shadow or outline, there are ways to make that with Pixelmator.
What do people use Photoshop for? I'm not touching up models for the Victoria Secret catalog. I'm basically doing one of three things with Photoshop... artwork for the web... artwork for print... artwork for apps. If Adobe doesn't want customers like me, then they've just eliminated about 99% of the market.
I've always hated Dreamweaver
I'm one of the few web developers that liked Frontpage. There was a simple setting to stop it from screwing up your code. I liked Frontpage because it was quick. I could switch to HTML code or back to WYSIWYG. When Dreamweaver somehow became the standard, I was confused. Why was this slow and bloated program so popular?
The reality is that a lot of web projects are centered around the CMS. I don't need Dreamweaver for that, as a decent CMS has a built-in editor. The only design work needed is creating the overall template. That's why I consider Artisteer as a superior alternative to Dreamweaver. Drupal, WordPress, Joomla - those are the systems that drive many websites. Click... click... done. That's how programs should work. I shouldn't have to waste years of my life figuring out how the program works. The program should know what I want and do it for me!
What about Flash?!
For annoying Banner ads, Flash is the champion. Yet, I primarily used Flash for two types of projects... Web Video and Games. With HTML 5, and that pesky <video> tag, things are pretty screwed up for web video right now. And considering that iOS web browser doesn't even support Flash, I have to start looking at alternatives. Those alternatives are looking a lot cheaper.
For games, this market is getting competitive. Programs like Unity, Torque, GameSalad and Corona are battling it out. GameSalad is free. The software can make games for the iPad, iPod Touch and iPhone. That's a huge chunk of the market right there. Plus, there's a web plugin. It's not ready for prime-time, but GameSalad is in beta. Mac App Store support is also coming soon. That's just GameSalad. The other SDKs also have advantages.
What do I get with Flash? FRUSTRATION!
I've watched ActionScript grow into a complicated mess. It used to take a few seconds to make a button to go to a web address. Now I have to use a search engine to remind myself how it's done in AS3. When several lines of code are needed to perform such a trivial task, the software is moving in the wrong direction.
Why should I pay more money for software I hate? Competitors are emerging. Is it a perfect replacement for Adobe Creative Suite? In every instance, no... but the competition is showing innovation with faster, cheaper and often better alternatives.
That is a big weakness of Pixelmator when compared to Photoshop.
Heh, but it's been a while since I needed to worry about that.