（三）使用网络地址切换工具、批量电话卡控制工具等规避网络运营者账号注册审核规则及其他措施，大量注册网络账号的；
The 80286 introduced "Protected Mode" in 1982. It was not popular. The mode was difficult to use, lacked paging, and offered no way to return to real mode without a hardware reset. The 80386, arriving three years later, made protection usable -- adding paging, a flat 32-bit address space, per-page User/Supervisor control, and Virtual 8086 mode so that DOS programs could run inside a protected multitasking system. These features made possible Windows 3.0, OS/2, and early Linux.
。关于这个话题，夫子提供了深入分析
回顾历史，早期智能硬件热潮中，租赁与渠道扩张都曾出现过短期红利。但真正持续盈利的公司，往往掌握核心技术或平台规则。
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