There is no reason to believe they wouldn't. The 2 models in appreciable production, the 70 series highlighted here has proven itself with a long track record. The 200 series, soon to be replaced has generally been the most expensive Toyota one can buy. The LX generally the most expensive Lexus (apart from super special models like LFA or Century in Japan), and engineers are generally given "a blank check" to build what they want to build that meets that ethos. Even though the next version will go more complicated with smaller engines and turbo chargers, they are still properly built. It's not just classic land cruisers with longevity, easy to find examples of 100 series land cruisers and Lexus GS (120 series) from the early to late 00s with half a million miles and going strong. 200s will when they've been around long enough.