Yes they have. The thickness of steel as inner/outer walls. The mass of motors and their internal copper has been cut by the use of far higher frequencies of al

Yes they have. The thickness of steel as inner/outer walls. The mass of motors and their internal copper has been cut by the use of far higher frequencies of alternating current often generated via pulse width modulation up to 50-200 Khz. The use of glues to fasten, foam to insulate and of course the planned life of 4-8 years. They are made to throw away, with no economic repair path as the labor cost plus parts often exceeds a new machine - it can take 3-4 hours of service labor to answer a call, arrange to view, use the embedded diagnostics to ID the fault and look up the parts cost = quote the client with the trip to inspect cost, plus the inflated parts cost plus another 3-4 to go fix. All these labor hours are costed at $75-125 per hour = zero economic way to fix