@bloodmoney
Depends on a lot of things. Points to consider are:
The cost for building and maintaining a website. It takes at least a few weeks to create a fully informative site from scratch. This means an investment of some odd 10k Euro / US Dollar. Then keeping it up to date takes at least a half days work a week, adding another 1k Euro / US Dollar every week. This money is taken right from the profits.
The size of the company. If it's just a 4 person operation (IIRC that's about the size of ACKControls) those persons have to create the cashflow to pay for a site.
The way of selling products. If they can get enough work in by phoning / visiting potential customers to keep 'em all at work, earning enough money to make a small profit then there's no use in getting even more work. It wouldn't be the first time a company went bust due to too much work being sold (sounds odd, but expanding the order wallet means investing in more people, bigger offices, more machines etc. etc. etc...).
You'll need to HAVE products. If no products are available (or only products developed for and owned by others) for show, there's no use in having a place to not showing it.
Okay, a little site declaring who they are would be nice, but apparently they don't feel it's possible. I know of companies who do produce and develop that don't have sites as well, so it's not that odd. Also, one must nog over-estimate the impact of a site. It's nice for a first contact but in many cases the phone has still to be used.