Time Warner Cable’s position as second largest cable company in the United States got some beefing up this morning with news it was acquiring 750,000 subscribers from Insight Communications in Illinois, Indiana, Kentucky and Ohio for $3 billion dollars in an all-cash deal.

That’s $1 billion less than asked by seller-owner Carlyle Group, which has been shopping the tenth largest cable operator around for months.

For many Insight subscribers, it means another new owner.  Most of Insight’s customers have been cobbled together from other cable systems, including Tele-Communications, Inc., AT&T Cable, Comcast, and even a few former Time Warner service areas.  For the past several years, Insight has been run under the ownership of equity investment firm Carlyle Group, which has treated it as an investment, waiting to be sold off to the highest bidder.  In 2007, Carlyle found no buyers willing to meet their asking price, and it appeared this year’s negotiations were headed in the same direction, as Time Warner Cable (among others) dismissed the $4 billion asking price as overpriced.

But this year, Carlyle apparently was unwilling to hold on to their investment, and according to an insider, quickly called Time Warner Cable after other potential bidders including WideOpen West, Mediacom Communications, Cablevision and Charter Cable dropped out.  Time Warner Cable repeated their offer of an all-cash purchase of $3 billion, and Carlyle accepted.

With the acquisition, Insight’s brand will eventually be dropped in favor of Time Warner Cable, who expects to realize $100 million in “cost savings” from bulk programming purchase deals and cost cutting measures.  Time Warner Cable also gets to realize tax benefits when it inherits Insight’s heavy net losses of $300 million, which will reduce the larger cable operator’s tax liabilities.

For customers, programming lineup changes are unlikely, and Insight already is aggressively deploying DOCSIS 3 for its broadband customers.  Time Warner is likely to realign Insight’s broadband packages closer to standard Road Runner packages.  Insight currently sells 10/1, 20/1.5, 30/3, and 50/5Mbps service.  Time Warner Cable routinely sells 10/1, 15/1, 30/5, and 50/5Mbps service in most DOCSIS 3-enabled service areas.

Time Warner’s acquisition of Insight bolsters its earlier purchase this year of cable properties in Kentucky and Tennessee formerly owned by another midwestern cable operator — NewWave Communications.